Temperature measurement ,display and controlAdopt differential to set temperatureCompressor startup delayAlarm when errorSwitches among refrigeration ,heating and alarmModel:STC-200Whole product Size: 77x34.5x65.5mmInstalling hole Size:70.5x28.5mmAmbient requirements: temperature: -5Celsius - +60Celsius humidity: 20%-60%(No condensate)Stored temperature:-30Celsius - 85Celsius Supply Voltage: 220VAC +/- 10%(12V+/-10%)Watt consumption:less than 5WTemperature measure range: -40-99CelsiusTemperature controlling range: -40-70CelsiusResolution: 1CelsiusAccuracy: +/-1 CelsiusInput: 1 NTC sensorSensor lenth:2M(include the probe)Relay Contact Capacity: 10A/250VAC/30VDCDisplay Type: DIGITALUsage: Household Type: ChargerStyle: Standing StationDisplay Size: 1.9 Inches & Undercolour:Photo colorMaterial:plasticPackage Contents:2 x Temperature Controller2 x Thermostat CableOnly 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.