Power voltage supply:DC12V/24V/220VAC Temperature measuring range: -50 ~ 110 Temperature control range: -50 ~ 110 Display accuracy:0.1 Temperature measurement accuracy: plus or minus 0.2 degrees Temperature control accuracy: plus or minus 0.1 degrees Input measurement: NTC10K probe L = 1 meter waterproof Input power: according to the claification of choice Output power: according to the claification of choice Appearance size: 60 * 45 * 31 mm Output type: relay output (output switch) Output capacity: 10A Pre up to show start temperature button Long pre The UP button the temperature display Flashing, pre the UP or DOWN button Set the beginning of the temperature value Pre Down the display button to stop temperature Long pre the Down button the temperature display Flashing, pre the UP or Down button Set to stop the temperature value Quantity: 1Pc Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!!! Package includes: 1Pcx 12V/24V/220 V 10A Digital Thermostat Control Switch Temperature Controller LED + Probe Instructions: 1.Set the startup temperature: Pre key once to start the display temperature. Pre 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: Pre the button to display the stop temperature. Pre 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, pre 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.