Temperature measurement ,display and control Adopt differential to set temperature Compressor startup delay Alarm when error Switches among refrigeration ,heating and alarm Model: -200 Whole product Size: 77x34.5x65.5mm Installing hole Size: 70.5x28.5mm Ambient requirements: temperature: -5Celsius - +60Celsius humidity: 20%-60%(No condensate) Stored temperature: -30Celsius - 85Celsius Power Supply Voltage: 220VAC +/- 10%(12V+/-10%) Watt consumption: less than 5W Temperature measure range: -40-99Celsius Temperature controlling range: -40-70Celsius Resolution: 1Celsius Accuracy: +/-1 Celsius Input: 1 sensor Sensor lenth: 2M(include the probe) Relay Contact Capacity: 10A/250VAC/30VDC Display Type: DIGITAL Usage: Household Power Type: Charger Style: Standing Station Display Size: 1.9 Inches & Under colour: Photo color Material: plastic Package Contents: 4 x Temperature Controller 4 x Thermostat Cable Only the above package content, other products are not included. Note: Light reflection 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.