Qiumi WiFi Zigbee30 TRV Thermostatic Valve Radiator Controller, supports Google Home, Alexa voice control and App remote control Qiumi WiFi Zigbee30 TRV Thermostatic Valve Radiator Controller, supports Google Home, Alexa voice control and App remote control Thermostatic Radiator Actuator Parameters: Power Supply: 2 AA batteries 1.5V alkaline battery (not included) Maximum current: 90mA Operating ambient temperature: -10~60℃ Display accuracy: 0.5℃ Standard temperature adjustment range: 5~35℃ Probe sensor: NTC(10k)1% Temperature display range: 1~70℃ Thread size: M30*1.5 Insulation status: Normal environment Dimensions: 53*89.5mm Operating program: Weekly cycle setting Maximum path: 4.5mm Tuya Smart ZigBee Radiator Actuator Thermostat Equipped with a digital LCD display. Powered by two AA batteries. Dedicated valve for use with radiators. Simulates indoor temperature, mainly used in underfloor heating systems to control the opening and closing of pipes. Must be used with a Tuya ZigBee gateway A ZigBee gateway is required to connect the valve to other ZigBee smart products and achieve comprehensive interconnection of smart home devices. Programmability: Supports manual setting of 5+2, 6+1, and 7-day weekly schedules, with 6 time periods selectable. Allows you to easily set customized indoor temperature schedules for different situations. Offers holiday mode, automatic mode, and enhanced mode. Supports voice and remote control via the ZigBee wireless gateway. Remote control is possible via a smartphone app. Supports hands-free voice control with Alexa and Google Assistant. Window opening detection. The valve will close for 15 minutes if the room temperature suddenly drops to the set temperature. If the room temperature remains below the set temperature afterward, this mode will be maintained. An easy-to-read digital display shows the temperature in Celsius.