The Water Leak Sensor 4 is a puck type water leak sensor, similar to our popular Water Leak Sensor 1. The Water Leak Sensor 4 adds an 105dB piezo sounder, and low-temperature sensing (to alert you to conditions that can lead to frozen pipes). 

It's our first water sensor that can warn you of cold temperatures before pipes can freeze. You can even have the water shut off automatically. It's the only water sensor with LoRa-based extreme long range wireless, 5 years between battery changes, a waterproof IP66-rated housing, a built-in audible alarm, and, with anti-freeze!

A variant of this product is the Water Leak Sensor 4 MoveAlert, that adds a component that can detect when the sensor has been removed. 

REQUIRED ITEMS: A YoLink hub with an internet connection is required for full functionality.

Features

• Wireless operation; no 120V outlet or additional wiring required
• LoRa long-range/low-power technology offers 5 years battery life, compared to 1 year for other brands
• Alexa voice assistant, Home Assistant and IFTTT integration
• YoLink Control D2D device-to-device pairing allows for your leak sensors to be paired to sirens and smart valves and valve controllersm, or other devices, without an internet connection, and without power ("No WiFi, No Internet, No Power - No Problem!")
• S.D.I.M - Smart Device Integrity Monitoring means your smart device is supervised 24/7 for communication and device health. Should your device fail to communicate or have a device health issue, you can be notified (per your alarm strategy settings). Each device has a unique identification number and it is individually monitored by the YoLink cloud server, 24/7, continuously
• YoLink’s industry-leading long range communication (up to 1/4 mile, open air!) allows for operation in larger homes and in areas difficult for other wireless systems, such as basements, separate garages/structures, and even outside your home

Benefits

• Exceptional value; high-quality wireless smart leak/flooding detection at a great price
• Low temperature alerts and notifications (adjustable)
• Audible sounder
• Be informed immediately of off-normal environmental conditions, such as water from leaks or flooding, in your home and property, before expensive repairs are required
• Create custom automations using the YoLink app, to trigger responses from other YoLink devices, such as the Siren Alarm
• Compact design allows for placing the sensor where others may not fit
• Easy to install and portable; move to other locations as needed
• Lower cost of ownership than other technologies; low-power operation means batteries may last over 5 years, compared to 1 or less from other brands
• Carefree maintenance, with more years between battery replacement
• Uses standard alkaline batteries (2 AAA batteries); no Lithium or special batteries required
  
• Works with the convenient and user-friendly YoLink app
• Extremely easy and fast installation using the YoLink app with Scan & Play
• Enjoy functionality even during a power outage. Control-D2D paired devices will perform their paired function automatically, without an internet connection, without the app, and without AC power (in the case of battery-powered or battery-backed-up devices - an internet connection is required for full functionality and for the app to work.)

For full details, view the Water Leak Sensor 4 page on our