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, using aviation aluminum silver frame, ABS flame retardant material, capacitive touch button , safe and secure to use. 2. This controller adopts LCD display screen with negative display backlight, with negative display function, black negative display screen display, with adjustable screen brightness, which can take care of your eyes. 3. The controller has a 5+2 six-segment weekly programming mode, which can accurately control the temperature within 0.5C of the comfortable setting, and maximize the comfort and economy of the home environment. It can also be equipped with a WIFI module and use a mobile phone APP link to realize remote control. 4. This controller adopts embedded installation, which is small in size, easy to install, perfectly fits the wall, beautiful and easy to operate. The temperature control range is 5-35C, and its own power consumption is less than 1.5W, which is economical and easy to use. 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 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 * Manual