RF Remote Conrol: Easy to install, applicable to anywhere you like. Weekly Programmable: The thermostat supports different temperature setting accordingly with 6 time-modes daily. Memory Function: No need to worry about power failure, data memory when power is off. Manual/Automatic Mode: You can freely choose manual or automatic mode. Children Lock: The keypad lock function is designed to prevent misuse by children. SPECIFICATION: Power: Receiver: 110V-240V AC 50/60HZ Display accuracy: 0.5C Range of temperature adjustment: 0~90C Power: 2xAAA battery(without)/USB change APP: Tuya Smart life APP Control: Smart thermostat, which can be controlled by mobile phone before going home. Voice control: FOR Alexa/ home/Yandex Application: Suitable for gas boiler/hot water heating. Perfect for home, office, shopping mall, hotel etc. Accurate Temperature: Automatically obtain the temperature with an accuracy of 1C. Material: plastic colour: black Package Contents: 1 x Thermostat 1 x Receiver 1 x English instructions 1 x mounting package 1 x USB cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.