Check the listing for details. W3001 AC DC Incubator Digital Temperature Controller Thermostat Switch Tester SW. Condition: New. Listed at 12.49 USD. Description:Material: ABS Size (Length x Width x Height): about 5.5 x 3.8 x 3.2cm (2.17 x 1.50 x 1.26'') Supply Voltage: AC 110V/220V, switched automatedly DC 12V DC 24VTemperature Measurement range: -50 +110 degree CelsiusTemperature Control Range: -50 +110 degree Celsius Control Accuracy: 0.1 degreeDisplay Accuracy: 0.1 degreeMeasuring Input: NTC10K Waterproof Probe L=1 Meter Output Type: Relay Output (Output Switch) Output Capacity: 10A Instructions:1.Set the startup temperature:Press ▲ key once to start the display temperature. Press and hold ▲ key for about 3 seconds to start the temperature digital flashing. Use ▲▼ key to set the desired temperature value. 2.Set the stop temperature:Press the ▼ button to display the stop temperature. Press and hold the ▼ button for about 3 seconds to stop the temperature digital flashing. Use the ▲▼ keys to set the desired temperature value. 3.How to restore the factory settings:When power is on, press and hold ▲▼ at the same time, the digital tube display 888 will then automatically jump to the detected temperature, that is, restore the factory settings. Package Includes: 1 x W3001 Incubator Digital Temperature Controller