Description: LED Digital Temperature Controller Celsius Display 1 Channel Relay output, Switch Between Cooling and Heating Modes Temperature Measuring Range: -20 to 100℃ With waterproof NTC 10K senor Specification: Material: ABS + Electronic components Color: Black LED Color: Red Size: approx. 4.8 x 3.2 x 2.8cm Supply Voltage: DC 24V Temperature Measuring (Control) Range: -20-100℃ Resolution: -9.9 to 99.9 ℃: 0.1℃ ; Other Temperature Range: 1℃ Accuracy: 1℃ Min Temperature Difference: 0.1℃ Refresh rate: 0.5s Measuring Input: NTC 10K Waterproof Probe Length = 1 Meter Output Type: Relay Output(Output Switch) Output Capacity: 10A Working Temperature: -10 to 60℃ Working Humidity: 20% to 75% Package Includes: 1 Piece Digital Temperature Controller Note: Color maybe slightly different due to different monitor. The above size is measured by hand, please allow slightly difference. Thanks !