Digital thermostat for surface mounting; the space controller, floor and room temperature can be set within the range of 5-55°C Built-in room sensor and external floor sensor, the thermostatic switch is ideal for regulating electric and water floor heaters White thermostat with weekly schedule (5/2, 6/1 or 7 days); the regulator turns on your heating circuits when the temperature is below the set temperature With room temperature sensor and floor sensor, NTC 10 kOhm with 2 m power cable, anti-freeze function, with LCD display and backlight, IP protection rating: IP21 Ideal temperature switch for infrared heating, electric heating, hot plates, surface heating, terrarium heating; room thermostat for electric floor heating Features: Backlit display Weekly Program Soil Temperature Calibratable/offset display Technical data: Mounting type: surface-mounted. Finish: Wired Operating voltage: 230 V. Maximum load switching power: 16 A / 3680 W. Adjustment type: two-point on/off adjustment. Operating temperature: 5-50 Probe: internal and external, NTC with 2m cable. Temperature adjustment range (internal): 0-55 °C (space sensor) Temperature adjustment range (external): 5-55 °C (ground probe). Frost protection: yes. Ground limitation range: 5-50 °C. Screen/Lighting: Yes/Yes IP rating: IP21. Dimensions (W x H x D): 80 x 90 x 53 mm. Package includes: 1 x E51 Room Thermostat 1 x Surface Mount Box 1 x NTC 10KOhm Floor Sensor 1 x mounting material.