Feature:1. Small design, do not occupy lots of space, avoiding collisions with human bodies or objects.2. Control the radiator thermostatic valves anytime and anywhere through the mobile phone app.3. Deeply customize the temperature according to your specific needs, and set the time and temperature more accurately. Support one week programming(5+2/6+1/7 days), set temperature for 6 time periods per day.4. Compatible with amazon alexa and home, a simply command to voice control the TRV.5. Window opening function, when the window is opened and consequently the room temperature decreases by more than 6 in 4min, the main screen will display \"OP\" and the valves will be turned off. If the room temperature increases by 3 this function may be disabled or it will be disabled after 48min or manually.Specification:Thermostatic radiator valve (TRV) is a self-regulating valve fitted to hot water heating system radiator to control the temperature of a room by changing the flow of hot water to the radiator. With the TRV TV06 you can conveniently adjust the room temperature between 5-30, and save more than 15% of energy.Features:Need to use with zigbee gateway E24093.Small design, do not occupy lots of space, avoiding collisions with human bodies or objects.Control the radiator thermostatic valves anytime and anywhere through the mobile phone app.Deeply customize the temperature according to your specific needs, and set the time and temperature more accurately. Support one week programming(5+2/6+1/7 days), set temperature for 6 time periods per day.Compatible with amazon alexa and home, a simply command to voice control the TRV.Window opening function, when the window is opened and consequently the room temperature decreases by more than 6 in 4min, the main screen will display "OP" and the valves will be turned off. If the room temperature increases by 3 this function may be disabled or it will be disabled after 48min or manually.Child lock function avoids kid's operation on it.Specifications:Type: Zigbee / WiFi / BT (Optional)Material: ABSColor: WhiteBattery: 2 * AA battery (Not included)Thread Size: Compatible with RAVL/RAV/RA valveDisplay: LEDMaximum Radiated Power: 10dBmMax. Route Size: 4.5mmAPP: Smart Life Degree of conservation: IP20Temperature Range: 5-30/ 41-86, step: 0.5/32.9Working Mode: Auto mode, Manual mode, Holiday modeItem Size: 100 * 56.5 * 56.5mm / 3.93 * 2.22 * 2.22inItem Weight: 146g / 5.15ozPackage Weight: 283g / 9.98ozPackage Size: 12 * 8 * 8cm / 4.72 * 3.15 * 3.15inPackage List:1 * Temperature Controller3 * Mounting Connections (RAVL/RAV/RA valve)1 * User Manual (English + German)Package List:1 * Temperature Controller3 * Mounting Connections (RAVL/RAV/RA valve)1 * User Manual (English + German)