Type:Voltage Regulator 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. Supply Voltage:12V Model Number:STC-3000 Product size: 75(L)x34.5(W)x85(D)(mm) sensor length: Im (include the probe) Temperature measuring range: 50C-99C Resolution: 0.1C Accuracy:+1 C(-50C-70 C) sensor error delay: l minute Power supply: 110V/220VAC+10%, 50/60Hz Power consumption: Less than 3w Relay contact capacity: Cool(10A/250VAC); Heat(10A/250VAC) Ambient temperature: 0C-60 C Storage temperature: -30C-75 Relative humidity: 20-85%(No condensate) Colour: Black material: plastic Package content: 1* Temperature Regulator 1* vinyl probe line 1* manual Only 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.