Stable temperature and humidity is often an essential factor to avoid costly and irreparable damage to property and possessions. A critical alert from a remote temperature sensor will allow you to take preventive measures before the temperature or humidity reaches destructive levels.
Remote temperature monitors are traditionally bulky and expensive devices with excessive monthly subscription fees. Companies immediately realized how vital the monitors are for a lot of business owners so as a result they became overpriced and out of reach to household consumers.
Fortunately, one company in particular, is placing the technology in the hands of all customers by manufacturing a WiFi thermometer that is simple, reliable and affordable with zero subscription fees. After extensive testing and research, we have concluded that the Temp Stick WiFi Temperature & Humidity Sensor From Ideal Sciences (click here to check the price) is the best device overall. This model is the easiest to set up; it’s accurate, and it offers the ideal combination of functionality and affordability in a discreet and compact battery-operated unit.
Our team of editors independently research, test, and recommend the best products to help you navigate when shopping online. This post contains compensated links, and if you make a purchase using the links included, we may earn a commission. To learn more, read our disclaimer.
What Is a Remote Temperature Monitor?
A remote temperature monitor is a compact wireless sensor that tracks temperature and humidity conditions. The top wireless temperature sensors are accompanied with a mobile app that visualizes the real-time data and enables you to set triggers to alert you of any important changes to the conditions.
The devices can connect to either a WiFi network, Bluetooth or a cellular network to achieve the remote capabilities that enable you to monitor the conditions from anywhere at any time and receive an alert on your smartphone, computer or tablet.
WiFi Temperature Sensor & Remote Temperature Sensor Reviews
We’ve taken a look at the best remote temperature sensors, and after testing the top models and reading a number of user reviews, we have uncovered a standout winner. Here are our findings.
1. Temp Stick WiFi Temperature & Humidity Sensor: Best Overall
Dimensions: 3.5 x 1.5 x 1.25 inches
Power Source: 2 AA Batteries
Battery Life: 6-12 months
Temperature Range: -40°F to 140°F
Temperature Accuracy: ±0.4°C (max)
Relative Humidity Range: 0 to 100%
Relative Humidity Accuracy: ±4% RH (max)
It doesn't matter whether you’re monitoring a freezer room, vacation home, RV, greenhouse, or a beloved pet, the Temp Stick is by far one of the top remote temperature sensors for the job. Made in the USA and built to work in Canada as well, the compact and reliable model is powered by 2 AA batteries, which will give you approximately 12 months of life depending on how often you configure the sensor to take readings. We recommend installing lithium batteries for better longevity and performance in extreme conditions (i.e. fridges and freezers).
A WiFi Temperature Sensor Is the Most Versatile Option
This model is an internet thermometer that uses a WiFi connection instead of Bluetooth or a cellular network for remote monitoring and alerts. Plus, there are no additional gateway devices you will have to purchase for the connectivity—it’s all built into the device. This model is the most versatile option to be able to monitor the conditions from just about anywhere 24/7. A cellular device typically incurs extra costs and the operating range on a Bluetooth device limits the amount of applications the sensor can be used for.
If you’re traveling with the device in an RV or if you're just in a position where you don’t have access to an internet connection, you can create a mobile hotspot with a Verizon Jetpack to remain connected.
Easy 3 Minute Setup
We found that the WiFi thermometer was extraordinarily easy to set up and get connected. It's advertised to have a 3 minute setup time and from our experience it felt even quicker. The device is factory calibrated, but if for some reason you’re not happy with the readings you’ll have the ability to set a calibration like synchronization with other instruments by increasing or decreasing the calibration offset value.
Intuitive App for iPhone and Android Smartphones
Temp Stick WiFi thermometers come with an intuitive app for both iPhone and Android mobiles. The app allows you to monitor current conditions as well as view an unlimited history of archived data from any date range. If you’d prefer to use a computer to monitor conditions, a web-based version of the app is also available. In particular, we like the graphs that give you a great snapshot of the temperature and humidity readings as you log in.
Multiple Contacts Can Receive Alerts
Within the app, you can easily set up triggers to have the device alert you by text or email the instant an important change to the temperature or humidity occurs. You can also have a total of ten different contacts receive alerts and notifications under one account. Additionally, you can customize which contacts receive a specific alert.
Add an Unlimited Amount of Wireless Sensors to the Platform
The platform allows you to add an unlimited amount of devices so you can monitor multiple locations simultaneously with one account, making it useful for more complex situations.
Adjust the Recording Intervals
You can adjust how often readings are taken, from every 60, 30, 15, 10 or 5 minutes based on your settings. Unfortunately, as 5 minutes is the shortest interval it is not a true real-time reading, so we have to point out that this may be the device’s only negative point. For most users, a 5-minute interval should be adequate.
Battery Level & Loss of Connection Alerts
Other noteworthy features include alerts for charge levels and loss of connection. That’s extremely important because losing connectivity without warning could spell trouble. If a check-in for a reading is missed because the power is out or the internet is down, the system sends you a notification that your sensor missed a check-in because it could not find a WiFi connection. The sensor will continue to log data (up to 100 readings) until it can connect again. You’ll receive a notification when a link has been re-established.
Most Accurate Remote Thermometer
You can also trust that your readings are accurate and reliable; designed to work in commercial freezers this WiFi-enabled thermometer is one of the most accurate and robust sensors out of the box. It has a temperature range of -40°F to 140°F accurate to ±0.4°C (max) and a relative humidity range of 0 to 100% accurate to ±4% RH (max).
Zero Subscription Fees
This model does not require a subscription so there are no recurring hidden fees. You only have to pay for the device, and that’s it. The sensor is one of the more expensive options on our list, but again we’ll point to the built-in WiFi, the reliability, and the high degree of accuracy as key reasons to look past how much you might be spending.
Our Top Recommendation
The Temp Stick from Ideal Sciences is a trustworthy WiFi temperature sensor that will get the job done without any hassle. It's accurate, reliable, and user-friendly. If you do run into any problems, the USA-based company offers free email and phone support 7-days-a-week, and the device also comes with a 5-year warranty.
When you're monitoring expensive, temperature-sensitive equipment, we understand that you must have an accurate monitor that will deliver alerts without fail. We quickly discovered that this exact model is that device. We couldn't find a better option on the market.
2. SensorPush Wireless Thermometer & Hygrometer: Runner-Up
Dimensions: 1.57 x 1.57 x 0.65 inches
Power Source: CR2477 coin cell battery
Battery Life: Typ. over 1 year (more in normal conditions, less in extreme cold)
Connection: Bluetooth and WiFi (G1 WiFi Gateway sold separately)
Temperature Range: -40°F to 140°F
Temperature Accuracy: ±0.7°C / ±1.3°F typical 1.2°C / ±2.2°F max
Relative Humidity Range: 0 to 100%
Relative Humidity Accuracy: ±4.5% typical ±7.5% max
The SensorPush Wireless Thermometer & Hygrometer is an appealing option if you’re monitoring rooms or possessions that are within your house. The SensorPush boasts a 325 feet connection range with a clear line of sight through Bluetooth, although, most of the time there will be obstructions between you and the sensor causing the range to be restricted. There is a WiFi gateway device that can be purchased to connect to the internet which will improve the remote capabilities, but it’s expensive and adding an extra piece of equipment takes away from the compact and convenient nature of the device.
For this reason, we prefer the Temp Stick instead. Otherwise, the SensorPush is one of the more capable wireless thermometers and hygrometers out there in the market.
This model measures just 1.57" x 1.57" x 0.65" and weighs only 40g making it one of the most smallest remote temperature sensors on our list. Despite its small size, the sensor is accurate, constructed with a Swiss-made sensing component you’ll always get reliable measurements.
The SensorPush runs on a CR2477 coin cell battery which typically provides over a year of regular use depending on the temperature conditions the sensor is placed in. It should last longer in warmer conditions and less in extreme cold.
The remote thermometer takes readings every minute and can store data for 20 days inside the unit itself—which is handy if it loses a connection as the data will be pushed to your phone when you return and reconnect. The intuitive iPhone and Android app can store an unlimited amount of data which is conveniently displayed inside timestamped graphs, and you’ll also have the ability to export all of the data into a CSV file for Excel.
Like the Temp Stick, the app is easy to use and can accommodate an unlimited amount of sensors, and one sensor can be monitored by an unlimited amount of mobiles. The app offers similar alert and calibration features, and users report that both setup and operation is for the most part trouble-free.
Hopefully in future models, SensorPush can incorporate WiFi within their models so you don’t have to purchase it separately, as it would undoubtedly make it a more level competitor with the Temp Stick. That said, it would probably be more expensive too, so for those that don’t need a WiFi-enabled thermometer and can stay nearby the sensor then the SensorPush is a worthy option.
3. MarCELL Cellular Monitoring System: Best Cellular
Dimensions: 5.2 x 2.0 x 1.2 inches
Power Source: DC 5V 2A, backup lithium-ion battery
Temperature Range: 0°F to 127°F
Relative Humidity Range: 10 to 95%
If you don’t have access to an internet connection and need to monitor the conditions from anywhere, then the MarCELL cellular monitoring system is our top recommendation.
Yes, in this buying guide, we recommend you stay away from subscription-based units. However, at the same time, not everybody will be served well by WiFi thermometers or traditional wireless temperature sensors with only short-range connectivity.
The device works by checking the conditions every 10 seconds. If the temperature or humidity exceeds your guidelines, you’ll instantly receive a phone call, email, or text message. If there is no issue, the MarCELL will record the conditions every hour and upload the data every 8 hours to the cloud so you can view it online. You can also purchase “Instant Update” activations, which allow you to see the current conditions in real-time without having to wait for the next update interval.
A traditional wall outlet powers the unit, and it will notify you of any power outages. If it does lose power, it can last up to 48 hours with the backup lithium battery.
As long as the location has some cell service, the MarCELL will work effectively. The unit operates off the Verizon 4G cellular network, so you should have no connectivity issues, as Verizon has the best coverage across the United States.
The company has an online web-based portal and app where you can view current data, see trends, and change the settings, much like the other models we reviewed.
The MarCELL unit is not just intended to monitor temperature and humidity. You can also connect a wireless water sensor to the system called SPucks. The SPuck can check for water leaks in areas such as your bathroom, laundry, or basement.
The biggest drawback is the connectivity costs. While you can pay a lower effective monthly fee by paying for the service a year in advance, it’s still pricey. We recommend the MarCELL for situations where traditional methods for remote monitoring aren’t feasible or are unavailable. The MarCELL will mainly be a reliable and trustworthy option for RV owners who are on the road without access to WiFi or vacation homeowners who need to monitor their property.
The device comes with a 30-day money-back guarantee, a 1-year warranty, and it has been designed and manufactured in the USA. The support team is also based in the USA and is available by phone, live chat online, and email.
We have rated the MarCELL as the best cellular temperature monitor because of the reliability and performance it provides. For users who aren’t bothered by the extra fees and need a cellular monitor that does it all—the MarCELL is hard to beat. This all-in-one-unit will provide complete peace of mind.
4. Ambient Weather WS-8482-X3: Best Remote Home Temperature Monitor
Console Dimensions: 5.0 x 4.5 x 1.0 inches
Power Source: Console – 5V DC Adaptor (1 x CR2032 for backup), Sensors – 2 AA Batteries
Connection: Wireless RF 915 MHz for sensors to console and WiFi for console data to the Internet
Temperature Range: -40°F to 149°F
Temperature Accuracy: ±2°F
Relative Humidity Range: 10 to 99%
Relative Humidity Accuracy: ±5%
We have chosen the Ambient Weather WS-8482-X3 as the best home temperature monitor because of its versatility, smart home features, and the number of wireless sensors it can accommodate.
The WS-8482-X3 package includes three wireless thermo-hygrometers and the display console also measures temperature and humidity, for a total of four monitoring locations. The console also supports four additional sensors, including the standard temperature and humidity sensor, a floating water sensor for your pool, spa or pond, and a soil moisture and temperature sensor. In total, eight different locations around your home and yard can be monitored with the WS-8482-X3 package.
There are two levels of wireless connectivity, the wireless sensors connect to the console via a wireless radio frequency (915 MHz) with a 300 feet line of sight range, and the console connects to your router via WiFi (2.4 GHz) and sends data to the AmbientWeather.net cloud network. Data is transmitted to the console and the Internet every 60 seconds.
Through the Ambient Weather cloud platform, you can view your data from anywhere with the smartphone app or through a browser on your computer. You can set an alert for high and low conditions for every parameter and receive notifications via text or email.
There’s also smart home support, which is another reason why this is the best unit if you want to set up a device for your home. You can connect to IFTTT to control other smart devices, including sprinklers, lights, blinds, and switches. Or connect with Alexa or Google Assistant to ask a compatible device for a personalized report on the conditions.
5. Govee WiFi Temperature Sensor: Best Budget Model
Dimensions: 3.0 x 2.1 x 0.9 inches
Power Source: 3 AAA Batteries
Battery Life: Approximately 3 months
Connection: WiFi and Bluetooth
Temperature Range: 14°F to 140°F
Temperature Accuracy: ±0.54°F
Relative Humidity Range: 0 to 99%
Relative Humidity Accuracy: ±3%
The Govee wireless temperature and humidity monitor connects to the Govee Smart Home iPhone and Android compatible app through either Bluetooth or WiFi (2.4 GHz only) for wireless monitoring. There are no subscription fees to access the app. You’ll only pay the initial cost for the device, which makes the Govee very affordable. However, because of that affordability, there are some functionality drawbacks.
Through the app, you can set alarms for temperature and humidity, and you will receive alerts through push notifications. Unfortunately, there are no text message or voice call options here. The device also provides a low battery alarm, but it will not warn you when if it loses its WiFi connection. Other users can also receive alerts by downloading the app and logging into the same account. Data is uploaded every 10 minutes to the app and up to 2-years of data is stored online for you to access.
A nice feature of the compact sensor is the digital display that provides readings without having to log in to the app. The sensor also has a desk stand, and it can also be easily mounted on a wall with double-sided tape as it’s very lightweight.
The Govee's battery power is said to last approximately three months, which is quite short compared to other models. The limited temperature range makes this model unsuitable for cold storage monitoring, especially in commercial freezers. The Govee is better suited for applications around the home, such as a guitar case, wine cellar, or cigar humidor.
If you need a reliable monitor that can notify you when it loses a connection and a power charge that lasts longer, look at our top recommendation, the Temp Stick instead.
Console Dimensions: 4.40 x 1.6 x 1.6 inches
Power Source: AC outlet, USB port, backup lithium-ion battery
Temperature Range: -40°F to 167°F
Temperature Accuracy: ±0.9°F from 59°F to 104°F
Relative Humidity Range: 0 to 100%
Relative Humidity Accuracy: ±3.5% RH from 20 to 80% RH
The Motorola MC4000 MultiSensor is a cellular-based device that can monitor and send alerts for temperature, humidity, water leaks, acceleration, light level, and power loss.
The MC4000 is an excellent option if you don’t have access to the best WiFi or no internet at all. For example, when you’re on the road in your RV, and you don’t have a hotspot, or if you need to monitor a remote vacation property, then a cellular monitor similar to the MC4000 will be required.
As it is a cellular monitor, there is a monthly subscription fee. However, it is one of the cheapest subscription fees on the market at only $5/month. Although, be aware that the MC4000 uses the AT&T network, so if you have poor reception with AT&T in your desired monitoring area, then you should choose another device.
The MC4000 can be accessed through your smartphone with the Android or iPhone app and through a browser. You can set custom alerts for extreme conditions, and the alerts can be sent by a voice call, text, and email to up to 12 recipients. Data is recorded at 20-minute intervals, but alarms will be sent instantly if your custom trigger criteria are met. The data is stored for 90 days online in a secure environment for you to access.
The unit can plug into any AC outlet or a USB port to operate. It also includes a 40-hour backup charge for continued reporting even when power is lost.
The Motorola MC4000 comes with a 2-year warranty and a 1-year warranty on the lithium-ion battery. USA-based support specialists are also on hand to help you if you ever need them.
Console Dimensions: 4.5 x 1.5 x 3.5 inches
Power Source: DC 5V 1A, backup 3.7V 1100mAH lithium battery
Temperature Range: -40°F to 176°F
Temperature Accuracy: ±0.9°F
Relative Humidity Range: 0 to 95%
Relative Humidity Accuracy: ±5% RH
The EliTech RCW-800 is a WiFi temperature monitor that comes with a sleek display console making it an ideal remote thermometer for commercial businesses that are specifically in need of cold chain storage monitoring. The device is powered by an AC outlet through an included DC adapter and will last an additional 6 hours if the power supply is disconnected thanks to the 3.7V lithium battery.
It connects seamlessly to your WiFi network to upload all the data to the Elitech cloud platform. You can view the data remotely via a smartphone or computer. Even when the RCW-800 is disconnected from the network, the model can store data until it reconnects, and it will upload any logged data to the cloud once it does.
Data can be uploaded from every 1 minute all the way to 24-hour intervals. Temperature and humidity alerts include an LED indicator, buzzer and platform reminder.
The wide temperature range and the high degree of accuracy are commendable, and there are no subscription fees here making the Elitech RCW-800 an attractive solution. Unfortunately, the lack of portability will limit the number of applications that it can be used for.
Factors to Consider When Shopping for a Wireless Temperature Sensor
There are some important factors that you need to think about in order to purchase the best remote temperature monitoring system for your particular needs. In the guide below we will help you understand what remote temperature sensors can be used for and we analyze the key features that will help you make the best purchase.
How Are You Going to Use the Remote Temperature Sensor?
Remote Home Temperature Monitor and Vacation Home Monitoring
Use in the home is likely to be the most common reason you’d want a remote temperature monitoring system. You can use it to monitor an infant’s room to make sure it’s neither too hot nor cold, the basement to prevent damage caused by frozen pipes and the attic to avoid moisture and heat buildup. Wireless temperature sensors are particularly useful for remote vacation home monitoring during the months that you are not there.
If you're also interested in monitoring conditions such as rainfall, wind speed and barometric pressure, then you will be better served by a complete home weather station.
Remote Pet Monitoring
We care a lot about our furry (and non-furry) friends, and many of them are much more sensitive to changes in temperature than we are. Make sure your pet is safe and healthy by watching the temperature and setting a temperature alarm when you have to leave them on their own. Many users find that a wireless temperature monitoring device is particularly useful when traveling with pets in their RV. If they have to quickly step out and leave their dog or cat behind in the RV, they can feel comfortable knowing their beloved pets are safe with the help of a WiFi monitor. Click here to see our reviews of the best pet temperature monitors for RVs.
Refrigerators, Freezers and Walk-in Cooler Remote Temperature Monitoring
Fridges, freezers and walk-in coolers must maintain a cold temperature level that will ensure food stays fresh and safe to consume. A refrigerator and freezer WiFi thermometer alert is useful not only in your own home to preserve your food but it is a critical instrument for restaurant owners to follow safe food storage practices on their premises.
RV Temperature Monitor
Mobile homes or RVs could benefit from a remote temperature monitoring system to save on cooling and heating costs and to protect any temperature-sensitive goods. It's particularly important to monitor the temperature of your RV during the summer, as just like a car it can heat up very quickly—causing early wear to your interior components and any supplies inside.
Vaccine Temperature Monitoring
Vaccines and other medical products must be stored at clearly defined temperatures. Most medical refrigerators have temperature controls but what happens when they fail or lose power? It's essential to have a backup remote temperature monitoring device to monitor your vaccines around the clock as they can be damaged or lose potency if they're exposed to extreme climates for extended periods of time.
Server Room Monitoring
Ever wonder why computer rooms in many places always seem colder than the rest of the building? There’s a good reason for that. Experts recommend maintaining a temperature of between 68 and 71 degrees Fahrenheit for optimal performance to avoid any damage to components. Servers must continuously be kept online as they are mission-critical pieces of equipment for a lot of companies in this digital age.
Wine, like any other alcohol, is susceptible to temperature changes. The ideal temperature does vary a bit based on the type of wine, but typically a 55°F temperature and 60%-70% relative humidity is perfect for a wine cellar to maintain the integrity of the wine and the corks. You’ll be able to ensure maximum freshness by using a WiFi temperature sensor to monitor the conditions in your wine cellar.
Cigar enthusiasts don’t want their prized possessions drying out, so continuously observing humidity levels is necessary to keep them fresh and full of flavor and aroma. Here, a hygrometer is vital for doing just that. Cigars need to be kept at a temperature of 70 degrees Fahrenheit and within a stable relative humidity range of 68%-72%.
Chickens and other hatched animals require a specific amount of heat to develop and hatch correctly. It’s critical to watch the temperature and humidity of your incubator to maximize hatch rates.
Want your plants to grow to their full potential? Make sure they’re getting the heat and moisture they need with a greenhouse thermometer. Now you’ll easily be able to monitor conditions inside your greenhouse with a wireless temperature sensor.
Although you may not think of it, temperature and humidity can have an adverse effect on musical instruments, especially those made of wood. If the relative humidity is too low, the wood on your guitar can shrink and crack. Too much moisture in the air can cause the wood to expand and swell, negatively affecting the sound of the instrument. Experts recommend that guitars be kept at a humidity level of 40-50% and at a temperature of around 72°F. With these storage conditions, your guitar will sound and play at its most optimal.
The accuracy and consistency of the readings are going to be the most critical feature to look for in every remote temperature and humidity monitor to successfully safeguard your items or protect your temperature-sensitive creatures.
Look for a remote temperature monitor that has a wide operating range for its temperature and humidity readings with a high degree of accuracy. The Temp Stick is an excellent model to compare with. We’ve found that it is the most accurate WiFi temperature monitoring system. It has a temperature range of -40°F to 140°F accurate to ±0.4°C (max) and a relative humidity range of 0 to 100% accurate to ±4% RH (max). Any sensor you choose should have similar specifications, or better. Having some way to calibrate these readings is also essential.
What type of connectivity option you choose will vary based on your specific needs. If you need to monitor a faraway location, then cellular connectivity might be your only choice. Monitoring close to your home will make a radio-based wireless or Bluetooth device viable, while sensors within your server room could use an Ethernet connection. If your monitoring location has access to the Internet then WiFi thermometers are going to be the most versatile and reliable option.
A cellular device normally incurs extra costs and the operating range on Bluetooth and radio-based wireless devices are severely reduced to 33 feet or so when there is no clear line of sight between you and the remote thermometer.
WiFi temperature monitors are great devices for most applications because you don't have to be near the sensor to observe the conditions and receive alerts. If you’re in a position where you don’t have access to the internet, you can use a mobile hotspot device, such as a Verizon Jetpack, to remain connected.
User Interface and Temperature Alerts
Make sure any remote temperature alarm system you choose has a user-friendly interface. Access from a smartphone or tablet through an app is certainly preferable, but at a minimum, you should at least be able to view an application on a website. Again, the Temp Stick shines here, as its remote temperature monitoring iPhone and Android app allow for easy access to current data and an unlimited history of archived data. The app also offers the capability to change settings and effortlessly create and receive alerts based on your own custom triggers.
Types of Readings and Additional Sensor Support
Some models can support additional sensors that operate on the same platform so you can monitor multiple remote locations at any given time. With the Temp Stick, you can control and receive alerts from an unlimited amount of sensors under one account.
This article is a temperature and humidity sensor buying guide, so naturally, any recommendations we make to you will all be able to do just that. However, there are devices on the market such as the MarCELL cellular monitoring system that has the option to include a water sensor which can come in handy to help monitor the basement and laundry for water leaks inside your home.
Wireless temperature sensors will operate from one of a few different power sources, with most operating on battery power. Just remember that the power source will affect how portable they are and your choice depends on your requirements. We recommend selecting a WiFi sensor that is battery powered as it offers the most portability. Make sure you use lithium batteries as they perform better in extreme climates and they last longer than alkaline batteries. Other models may operate off of AC power, USB, or through PoE (Power over Ethernet).
Initial Cost and Subscription Fees
Typically, the more accurate, reliable, and feature-rich the sensor is—the more expensive it will be. However, at the same time, we don’t see the need to purchase any sensor with subscription fees, unless you require cellular connectivity.
While our top choice, the Temp Stick, isn’t the cheapest initially, it has zero subscription fees, and the WiFi connectivity makes it useful in just about every possible scenario as you’ll have the ability to monitor the conditions from almost anywhere at any time.
Overall we’re particularly impressed with the versatility and performance of the Temp Stick WiFi Temperature & Humidity Sensor. It’s the most accurate sensor, it’s reliable, the smartphone app works seamlessly, and the inclusion of WiFi connectivity with zero subscription fees propels this remote model into a class of its own. Owners seem to have the most long-term success with this WiFi thermometer, so we recommend it here without any reservations.
The next best option is the SensorPush Wireless Thermometer & Hygrometer. While it does require a WiFi Gateway to be able to view data remotely over the internet, its performance is quite close to that of the Temp Stick, and if you just a model for use within your home, then the SensorPush will do an excellent job.