Production Introduction: ME81F_WF is full LCD display thermostat with touch key and mirror surface, it can be controlled by smart phone. It is used to control room temperature in central air conditioning or fan coil units system. By comparing room temperature with setting temperature to open and close fan coil units and motorized valve in the end of air conditioning system,to achieve purpose of adjusting room temperature, comfort and saving energy. Production Parameter: Voltage: 85-250V AC ,50/60Hz Power consumption: Room Temperature range: 0-99鈩?/p> Sensor: built-in sensor Fan Speed: High, middle, low, auto Mode: 2 pipes/4 pipes Product details:China FCU Thermostat manufacturers website:http://www.yuetsz.com/fcu-thermostat/