Features: 1. The controller is mainly used for central air conditioning, cooling/heating, four pipes and three wind speeds, working voltage range 95-240VAC, frequency 50/60HZ, electric heating 16A, water heating, and boiler 5A. Tuya ZIGBEE model with voice control. 2. The controller adopts a 3.2-inch LCD display screen, with negative display function, 6000 negative display, black negative display screen display, with adjustable screen brightness, can take care of your eyes. 3. The controller has a one-week programming function, which can set multiple time periods corresponding to multiple temperatures, which is more advanced and convenient than the timing function. It can also be equipped with a WIFI module and use a mobile phone APP link to realize remote control. 4. This controller has a memory function, which can be customized to save your programming settings to avoid data loss caused by power failure, which is very user-friendly. Embedded installation, small size, easy installation, perfect fit on the wall, beautiful and easy to operate. 5. The controller controls the opening and closing of the fan coil, electric valve, electric ball valve or air valve and heating equipment at the end of the air-conditioning system to adjust the indoor temperature and save energy. It is suitable for the temperature control needs of various public places such as offices, bedrooms, living rooms, supermarkets, hotel restaurants, etc. Specifications: Material: PC + ABS Fireproof Color: Black / White / Silver Optional Measurement Object: Room Temperature Installation Type: Embedded Mounting Hole Distance: 60mm Timing Error: 1% Ambient Humidity: 5-95% RH (Non Condensing) Ambient Temperature: 0-45 Set Temperature Range: 5-35 Display Temperature Range: 5-99 Temperature Measurement Error: 0.5 Protection Class: IP20 Operating Voltage: 95-240 (V) Power Consumption: 1.5W Package Size: 8.6 * 8.6 * 4.2cm / 3.4 * 3.4 * 1.6in Package Weight: 250g / 8.8oz Note: Please read the product manual carefully before use. Package List: 1 * Thermostat 1 * Screw 1 * Manual