This manual thermostat for electric underfloor heating is used to control the underfloor temperature and the operation of underfloor heating. When the LED indicator lights up, it indicates that it is heating. Features: [Manual Switch]Convenient manual switch, high reliability, simple and intuitive. [LED Indicator]This electric underfloor heating thermostat has an LED indicator that allows you to easily check whether the underfloor heating is working or not. [Easy to Use]Turn on the push button and adjust the floor temperature by turning the knob. [Temperature Sensor]With temperature sensor to detect the temperature of the underfloor heating system, making temperature control more accurate and easier. [Widely Applicable]This thermostat is wall mounted in a standard back box suitable for the whole world. It is suitable for electronic underfloor heating and other electric heating elements. Specifications: Type: Electric Heating 16A(Type 1) Water Heating 3A(Type 2) (Optional) Color: White Design: Wi-Fi Material: PC Battery: 3xAA Batteries(Not Included) Wireless Frequency: 433MHz(FSK) Transmission distance: Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.