Eight replaceable AAA batteries good for over 5 years are included!
Our patented Control-D2D device-to-device pairing over our LoRa-based wireless network allows for devices to be paired to each other in such a way they will continue to operate even if WiFi is flaky the internet goes down or the AC power goes out! YoLink Smart Wireless Temperature/Humidity Sensor Wide Range for Freezer Fridge Monitoring Pet Cage/Tank Monitoring EXTREME LONG RANGE! SET IT & FORGET IT! UNLOCK YOUR SMART HOME! NO WIFI NO INTERNET NO POWER? Powered by LoRa technology the long-range yet low-power system offers the industryâs longest receiving range in the market (1/4 mile). SMART WATER STARTER KIT YoLink Hub Leak Detection Starter Kit including one hub and quantity four Water Leak Sensor 1. NO PROBLEM! Connect to your router s ethernet port for our Plug Plug & Play easiest set-up - be up and running in just minutes! The YoLink wireless Water Sensor could not be easier to install; just place near or under the equipment you wish to monitor.