【Easy to connect, safe to use】Featuring a large backlit LCD display, this programmable thermostat is suitable for electric heaters or on/off valve actuators used in water heating systems. Temperature setting range: 5℃~90℃. Power supply: AC 230V, 50/60Hz. Output: 16A. Flush mount. 【Flexible Programming】5+2, 6+1, or 7 days, with a maximum setting of 6 periods per day, flexible programming allows you to optimize your heating according to your individual needs, saving energy and costs on your energy bill. 【2 Modes to Choose From】 In addition to the 5+2/6+1/7-day programming mode, this programmable electric underfloor heating thermostat also has a manual mode that allows you to keep the room at a constant temperature. 【Internal and External Sensor Selection】 This programmable thermostat has 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. 【Other Functions】Temperature