Features:Smart thermostat that can be controlled by your phone before you come back home.Wall mount or tabletop installation style meets your different needs.Pairing the thermostat with receiver, then the receiver can enforce heating, more flexible to use.3 power supply mothods: 2 * AAA batteries (NOT INCLUDED), DC 5V USB charging, AC230V wiring.Create thermostat group to centralized control and support device sharing.Compatible with Alexa and Google Assistant for hands-free voice control.6 periods can be set each day, free to choose manual mode or auto mode.Backlit LCD display for easy reading, touch button to make simple operation.Keypad locking function is designed to prevent children from operating by mistake.With anti-froze function to prolong the service life of the device.1 accuracy keeps temperature within the level you set.Suitable for gas boiler/hot water heating. Perfectly suitable for homes, offices, shopping malls, hotels, etc.Note: (GA) is suitable for water heating (GC) Only applicable to boiler heatingSpecifications:Material: PCColor: WhiteVoltage: 230VLoad Current: 3ATemperature Sensor: NTCTemperature Accuracy: 1Temperature Setting Range: 5~90Protection Level: IP20Wireless Transmission Distance: 100-200mWireless Frequency: 868MHz/ 433MHz (Two-way FSK)APP: TuyaPower Supply: 2 * AAA Batteries (NOT INCLUDED), DC 5V USB Charing, AC230V Wiring WiFi functionality is not supported when running on battery powerItem Size:Thermostat: 135 * 87.5 * 23.2mm / 5.3 * 3.4 * 0.9inReceiver: 86 * 86 * 26mm / 3.4 * 3.4 * 1.0in Package List:1 x Smart Thermostat1 x Receiver1 x Set of Installation Screw1 x USB Cable1 x Manual