Welcome to the store! Switch modes between cooling and heating; Control the temperature by setting the temperature-setting value and the difference value; Temperature calibration; Delay protection for cooling control; Alarm when the temperature exceeds the temperature limit or in case of sensor failure. Specification and Size Front Panel Size: 75(L)*34.5(W)(mm) Mounting Size: 71(L)x29(W)mm; Sensor Length: 2m (including the probe) Product Size 75(L)x34.5(W)x85(D)mm; Technical Parameters Temperature Measuring Range: -50~99C; Resolution: 0.1C; Accuracy: +/- 1C (-50~70C); Sensor Error Delay: 1 minute Power Supply: 220VAC+/- 10%, 50/60Hz; Power Consumption: Less than or equal to 3W; Sensor: NTC Sensor (1 Pc); Relay Contact Capacity: Cooling 10A/250VAC; Heating 10A/250VAC; Ambient Temperature: 0~60C; Storage Temperature: -30~75C; Relative Humidity: 20%~85% (No Condensation). Material: ABS Package Includes: 3 x Mini Digital Temperature Controller Thermostat 3 x Temperature Sensor Probe with 2M Cable 3 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 differ slightly from the real one. The allowed measurement error is +/- 1-3 cm. Your satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will provide you with the best solution!