Good quality and simple: start time, stop time, and timer; just plug in and select the heating or cooling system to make it work, no wiring required, accurate LCD readings. Temperature control range: 40120F. Operating temperature: 1C. Reset temperature: 1C. Operating structure: self-reset. Electric shock type: 1NC. Lead length: 1.8 meters. Product specifications: European regulation. Digital temperature controller available for 100250V, 16A (max). Simultaneous connection of heating and cooling systems: heating and cooling functions can be set separately to control temperature during rapid changes. Temperature alarms: trigger alarms when temperature exceeds limits or a sensor error occurs, eliminating the need to continuously monitor temperature changes. Compressor delay protection for compressor control; temperature can also be calibrated. Widely used device: with this thermostat, you can precisely control room temperature. Widely used in greenhouses, fish tanks, carbon crystal heaters, aquaculture, incubators, room temperature control, and home applications. Note: product color may vary slightly due to monitor display differences. Size is measured manually; a 12 cm variation is normal.