Switch the modes between cool and heat; Control temperature by setting the temperature setting value and the difference value; Temperature calibration; Refrigerating control output delay protection; Alarm when temperature exceeds temperature limit or when sensor error. Specification and size Front panel size: 75(L) x 34.5(W)(mm) Mounting size: 71(L) x 29(W) mm Sensor length: 2m (including the probe) Product size: 75(L) x 34.5(W) x 85(D) mm Technical Parameters Temperature measuring range: -50~99°C Resolution: 0.1°C Accuracy: ±1°C (-50~70°C) Sensor error delay: 1 minute Power supply: 220VAC ±10%, 50/60Hz Power consumption: ≤3W Sensor: NTC sensor (1PC) Relay contact capacity: Cool 10A/250VAC; Heat 10A/250VAC Ambient temperature: 0~60°C Storage temperature: -30~75°C Relative humidity: 20%~85% (No condensation) Material: ABS Package included: 10 x Mini Digital Temperature Controller Thermostat 10 x Temperature sensor probe with 2M cable 10 x Instruction 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 to be slightly different from the real thing. The measurement allowed error is +/- 1-3cm.