The Best Water & Temperature Sensors 2025

1. Arlo - All-in-One Sensor with 8 sensing functions for Home Security System, 1 Pack - White

Expand your security system protection with the advanced Arlo All-in-One Sensor. With eight sensing functions in one compact, go-anywhere design, just place the All-in-One Sensor anywhere you need coverage and easily pick one or more detection functions you want through the Arlo Secure App. Add-on sensor only, requires Arlo Home Security System SS1201 or SS1501 (sold separately).

All-in-One Convenience 8 sensing functions in 1 compact design give you flexibility to place anywhere you need coverage inside your home. Customization and Flexibility Easily assign single or multiple detection functions through the easy-to-use Arlo Secure App. Motion Detection Delivers alerts when motion is detected inside your home.

2. GE CYNC Smart Temperature Sensor, Thermostat Sensor, Humidity Sensor, Works with CYNC Smart Thermostat (Sold Separately), Set Schedules in CYNC App (1 Pack)

GE Cync Smart Home Room Temperature Sensor, 1pk

Works with the Cync Smart Thermostat (sold separately): The Room Sensor groups with the Cync Smart Thermostat to provide a more comfortable and responsive home Optimize comfort where it matters most: Add sensors to different rooms and create the ideal temperature in the rooms you're in different times of the day Reduce hot and cold spots: Average the temperature between your Cync Smart Thermostat (sold separately) and Sensors to improve temperature consistency throughout your house Create custom schedules: Set a schedule in the Cync app and change your bedroom temperature from cool at bedtime to warm at sunrise

3. Honeywell Home - Smart Room Sensor - White

Connects to compatible devices via 3G, 4G, 4G LTE or Bluetooth; Split-Spectrum, ionization and photoelectric sensors; Nest app (download required); mounting hardware included

Optimize overall comfort in any room with this Honeywell Home smart room sensor. User-friendly controls let you define ideal comfort settings depending on time and weather conditions, while the 200-foot sensor range ensures effective monitoring of almost every part of the room. This Honeywell Home smart room sensor features a simple design for quick installation.

4. Resideo - Wi-Fi Water Leak and Freeze Detector - White

Phyn Smart Water Sensors detect water leaks, frozen temperatures and potentially damaging high and low humidity the moment they occur and alert you audibly, visually and with SMS and app notifications to your phone. Customize alert thresholds and settings for extended battery life. Connects via Wi-Fi to your home network.

Protect your home from water damage with the white Resideo smart leak detector. This Bluetooth enabled device mounts onto any wall or floor near a water source, and the removable cable sensor detects leaks and low temperatures. Install the Resideo smart leak detector app on your smartphone to receive notifications when water or freezing temperatures are detected.

5. Aqara - FP2 Presence Sensor- mmWave Radar Sensor, Zone Positioning, Multi-Person and Fall Detection, Sleep Monitoring - White

Connects to compatible devices via 3G, 4G, 4G LTE or Bluetooth; Split-Spectrum, ionization and photoelectric sensors; Nest app (download required); mounting hardware included

Aqara Presence Sensor FP2 uses cutting-edge millimeter-wave radar technology, which can accurately detect the presence of people even with slight movements. This technology ensures continuity and stability of the smart device. It also has the function of zone positioning, which allows for the automation of different conditions in different zones, such as beds and tables. One space can now be divided into up to 30 small zones and recognize up to five targets (Multi-person Detection). It can also control other smart home devices through ecosystems such as Apple Home to achieve wider applications. It features functions such as human fall recognition, sleep monitoring and a built-in light sensor. Likewise, it is a great helper that can truly combine the diversity of the user's home life and realize the automation of different personalities.

6. Streamlabs - Wi-Fi Home Water Monitoring and Leak Detection System

Smart home water monitor; advanced ultrasonic technology; Wi-Fi connection; easy to install and mount; remote home monitoring

The Streamlabs water monitor gives you the peace of mind that your home is protected from water damage. It attaches easily to your existing plumbing, with no pipe cutting required, and uses ultrasonic technology to measure and detect changes in the flow of the water in your pipes. It's Wi-Fi enabled, so you can check on your home anytime, anywhere using the smartphone app. And real-time leak alerts will notify you if you need to take action. The Streamlabs water monitor is also part of your complete smart home, integrating with both Nest and Alexa systems.

7. T1 Water Leak Sensor- Requires Aqara Hub, Supports Apple HomeKit, Alexa, Google, SmartThings - White

The Aqara Water Leak Sensor T1 detects water leaks or flooding events and monitors the status of that water leak. When a water leak or flooding occurs with water levels up to 0.019 in. (0.5 mm), it will trigger the required Aqara hub (sold separately) to send an instant alert notification via app and sound an alarm. The sensor is IP67 dustproof and waterproof to work in humid and dusty environments. It also works with other smart accessories to automate your home.

Aqara Water Leak Sensor T1 detects water leak or flooding events and monitors the status of water leak. When the water leak or flooding occurs, it can send an instant alert notification via app. It also works with other smart accessories to automate your home.

8. T1 Temperature and Humidity Sensor- Requires Aqara Hub, Supports Apple HomeKit, Alexa, Google, SmartThings - White

The Aqara® Temperature and Humidity Sensor T1 monitors and records indoor temperature, humidity, and atmospheric pressure in real time. The current and historical data is displayed in the Aqara® Home app. It can also trigger other smart accessories (sold separately) to automate your home. It does require an Aqara® hub in order to work with the Home app.

Aqara Temperature and Humidity Sensor T1 monitors and records indoor temperature, humidity and atmospheric pressure in real time. The current and historical data is displayed in the app. It can also trigger other smart accessories to automate your home.

9. globe electric - Wi-Fi Smart Water Leak Sensor - White

Globe Electric Liquid Leak Sensor; Wireless Connectivity; White Color

Help avoid messy, costly leaks with this Globe Electric Wi-Fi Smart Water Leak Sensor and the GLOBE SUITE App. A great tool for automating your home right from your phone, the free GLOBE SUITE App is easy to set up with no hub required. Simply download it, connect to your home Wi-Fi, sync your smart sensor and you're set. In addition to using your phone, you can also control the smart sensor with your voice using Google Assistant, Amazon Alexa, or Siri. The sensor comes in a compact design for convenient placement near your washing machine, dishwasher, water heater, fish tank, sink or toilet. Once installed and synced, it's ready to send you alerts the minute leakage occurs. The smart water sensor will send a notification to the app as well as sound an audible alarm, helping to prevent water damage from flooding, water spills and bursting pipes. You can also use the GLOBE SUITE app to establish certain conditions. By pairing the sensor with other household smart devices, you can alert others in your home when a leak occurs. For example, if water is detected in an upstairs bathroom, the app can create a Trigger Scene to turn on a specific light downstairs and let people know. With this smart water sensor in place, you're able to prevent water damage before it occurs. Ready for use right out of the package, this Globe Electric Wi-Fi Smart Water Leak Sensor (model 50027) requires one CR2-3V Lithium battery (included). With low energy consumption, the battery can operate in standby mode for up to five years. The water leak sensor is easy to attach to your desired location with the included mounting kit or 3M tape (sold separately). The GLOBE SUITE App works with iOS 9.0 or higher/Android 4.4 or higher. Initial setup requires connectivity with your Wi-Fi router at 2.4 GHz and can then run on 2.4 GHz or 5 GHz.

10. Arlo Home Security System Bundle - White

Arlo Home Security System Bundle