Features: * Convenient Control The ZigBee Smart TRV Controller allows you to control your radiator thermostat valve from anywhere, anytime with the dedicated phone app. You can easily set the temperature, set schedules and monitor energy consumption with just a few taps on your smartphone. * Enhanced Convenience: With the programmable weekly schedule and period function, you can adjust the room temperature to your specific needs. This ensures comfort while minimizing energy waste. * Intelligent Functions The TRV controller provides various intelligent functions, such as automatic calibration function, LED display and time opening query. These features provide accurate measurements, clear information, and a historical view of how the TRV operates so you can make informed adjustments for greater efficiency. * Seamless Integration This TRV controller can be seamlessly integrated into your smart home ecosystem. With features such as voice control, linking function, family sharing function and group control function, you can create a comprehensive smart home experience that allows effortless control and coordination of multiple devices. Specifications: *-- App: Smart Life/Tuya Smart *-- Voice control: Amazon Alexa, Google Home *-- Frequency: 2.4GHz *-- Battery: 2 x AA Alkaline Battery (LR6 not included) *-- Battery life: half a year *-- Temperature range: 5-60 *-- Temperature display: 0-60 *-- Constant temperature tolerance: ± 1. *-- Temperature sensor: NTC *-- Wireless Protocol: Zigbee 3.0 *-- Connector: M30 x 1.5mm *-- Max. Path: 6mm *-- Operating temperature: -10 - 40 . *-- Working environment: indoor *-- Frost protection: yes. *-- Programmable: Yes Package includes: 1/3/5 x Tuya ZigBee 3.0 TRV valve