Theory : Temperature ControllerMax Measuring Temperature : 49C & UnderDisplay Type : DIGITALCertification : NONEStyle : EmbeddedUsage : IndustrialModel Number : XH-W3001Power Type : ChargerDisplay Size : 1.9 Inches & UnderFeature 1: : 220v digital led temperature controller 10aFeature : digital led temperature controller thermoFeature 2 : temperature controller10pcs/lot XH-W3001 Temperature Controller Thermostat Thermoregulator Aquarium Incubator Water Heater Temp Regulator 220V 40%offTemperature measurement range: - 50C~ 110CTemperature control range: - 50C~ 110CTemperature measuring accuracy: plus or minus 0.2 degreeTemperature control precision: plus or minus 0.1 degreeMeasuring input: NTC10K L = 1 meters waterproof probeInput power: according to the classification of choiceOutput power: according to the classification of choiceOperation1.press up button show the starting temperature2.long press UP button the temperature display Flashing , press the UP or Down button Set the start temperature value3.Press Down button show the Stop temperature4.long press Down button the temperature display Flashing , press the UP or Down button Set the stop temperature value