For use in conjunction with Honeywell Home Evohome Thermostat Pack. Hot water control kit consisting of a wireless cylinder thermostat, transceiver, optional unvented cylinder insertion sensor and an additional wireless BDR relay box to control a 2-port zone valve or 3-port diverter valve. Features time and temperature set and easy-to-read LED indicators. Includes accurate temperature sensors for both traditional and unvented cylinders. Works with - Amazon Alexa - Google Home - iOS App - Android App Set Point Suitable for Hot Water Central Heating Systems Thermostat Battery-Powered Receiver Fits Vented & Unvented Cylinders Time & Temperature Set Works with - Amazon Alexa - Google Home - iOS App - Android App Set Point Suitable for Hot Water Central Heating Systems Thermostat Battery-Powered Receiver Fits Vented & Unvented Cylinders Time & Temperature Set