Digital thermostat f surface mounting; the space controller, flo room temperature can be set within the range of 5-55anddeg;C Built-in room sens external flo sens, the thermostatic switch is ideal f regulating electric water flo heaters White thermostat with weekly schedule (5/2, 6/1 7 days); the regulat turns on your heating circuits when the temperature is below the set temperature With room temperature sens flo sens, NTC 10 kOhm with 2 m power cable, anti-freeze function, with LCD display backlight, IP protection rating: IP21 Ideal temperature switch f infrared heating, electric heating, hot plates, surface heating, terrarium heating; room thermostat f electric flo 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 external, NTC with 2m cable. Temperature adjustment range (internal): 0-55 anddeg;C (space sens) Temperature adjustment range (external): 5-55 anddeg;C (ground probe). Frost protection: yes. Ground limitation range: 5-50 anddeg;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 Flo Sens 1 x mounting material.