This LED screen display indoor thermostat adopts microcomputer control technology to control and stop of central air conditioner fan coil unit, so that achieve indoor balance and energy saving purposes. It is easy and convenient to use by setting start up and stop for heating and cooling mode. With it, you can always have a comfortable at your home. Feature - Control room in central air conditioning fan coil units system. - Large LED display with backlight, easy to read. - Set start up lower than stop for heating mode, start up higher than stop for cooling mode. - Achieve purpose of adjusting room , comfort and saving energy. - Warm Tip: Dear buyer, Due to lighting effect, monitor’s brightness, manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand! Thank you! Specification - - Material: Plastic and metal - Size: About 5x4x2cm - Input voltage: 12V - Working mode: Cooling, heating - Set Point/Detection Range: -50~110 degree centigrade Package list: 1 x Digital Thermostat