Switch the modes between cool and heat;Control temperature by setting the temperature setting value and the difference value;Temperature calibration;efrigerating control output delay protection;Alarm whentemperature exceedstemperature limit or when sensor error.Type:Voltage RegulatorSupply Voltage:220VModel Number:STC-3000sensor length: Im (include the probe)Temperature measuring range: 50C-99CelsiusResolution: 0.1CelsiusAccuracy:+1 C(-50Celsius-70 Celsius)sensor error delay: l minutePower supply: 110V/220VAC+10%, 50/60HzPower consumption: Less than 3wRelay contact capacity: Cool(10A/250VAC); Heat(10A/250VAC)Ambient temperature: 0Celsius-60 CelsiusStorage temperature: -30Celsius-75Relative humidity: 20-85%(No condensate)Colour:BlackMaterial:ABSPackage Contents:2 x Temperature Regulator2 x vinyl probe lineOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.