Easy and Safe to UseWith simple installation and compatibility with electric underfloor heating system, this programmable underfloor heating thermostat features a large, easy-to-read LCD display with backlight. Power supply: AC 230V, 50/60Hz. Output: 16A. Flush mount. 2 Modes to ChooseIn addition to the 5+2/6+1/7-day program mode, this programmable electric underfloor heating thermostat also features a manual mode that allows you to keep your room at a constant temperature. Internal and External Sensor SelectionThis programmable thermostat features a built-in air sensor and a 3m external temperature sensor probe. You can choose to use a built-in sensor, a floor sensor or both sensors according to your needs. Additional features to meet your more professional needsTemperature calibration, child lock, frost protection, high/low temperature protection, data storage when power off, reset, etc. Note: The data are all measured manually, please allow 1-3cm error Due to differences in light and display, there may be some color differences, please refer to the actual item received.