Descriptions:This mini temperature controller, with heat and cool control, can set both a high and a low temperature limit, when the temperature is beyond the compass of limits, it will cool or heat automatically.Features:The temperature control range is -40 to 120.With large and clear LED display for better readability.Compatible with refrigeration and heating control.Return difference is adjustable (1-30).With delay start function.Temperature upper and lower limit setting function, factory parameter locking function.Support to restore factory settings.Support power-down storage (sudden power-off settings are still valid).Supports temperature correction.Specifications:Product model: MH1230AWorking voltage: AC220VWorking current: relay can withstand 30A currentTemperature control: -40 to 120 Measurement error: 0.5Display accuracy: 0.1, control accuracy : 1 Temperature sensor: NTC (10K/3435)Working temperature: 0 to 60 Storage temperature: - 10 to 60 Humidity: 90% RH without moisture condensationData storage: yesRelay contact current: AC: 30A/220V, can withstand 6600W loadTemperature controller size: 8.5 x 7.5 x 3.5cm/3.35 x 2.95 x 1.38inchSensor: probe: 4 x 25mm/0.16 x 0.98inch, cable: 1m/39.37inchWeight: 224gPackage Included:1 x Digital Temperature Controller1 x Sensor