This is a digital Temperature controller with wide temperature measuring and control range. The WH7016E temperature controller can turn on/off an electric appliances at desired temperature. Humidification and Dehumidification modes can be set through the menu. <br><br> There're 2 relays on this controller. One of them is used to turn on/off an electric appliances at desired temperature. The other is a spare replay for you connecting an external alarm device.<br><br> For example, you can use the controller to turn on a heater at 99. 9 F and turn it off at 100 F. Or turn on a freeze at 52 F and turn it off at 45. 3 F. (Please be noted that the controller itself doesn't change temp. You need to use heater or refrigeration equipment with it. )<br><br> <b>Specification:</b><br><br> Power supply: AC 110V 50/60Hz<br> Relay contact capacity: 10A (Maximum load: 1100 watts @110 volts)<br> Measure range: -58 ~ 230 F(-50 ~ 110 C)<br> Temperature resolution: 0.1; Control resolution: 0.1;<br> Accuracy: 0.5 (Can be calibrated)<br> Working mode: Heating OR Cooling mode<br> Slew range of temp controlling: 0.1 - 25(difference between turn-on degree and turn-off degree)<br> Power consumption: less than 3W<br> Sensor Cable length: 3m(9.8ft)<br><br> <b>Size:</b><br><br> Front panel size: 75(L) x 34.5(W)(mm)<br> Mounting size:71(L) x 29(mm)<br> Product size:75(L) x 34.5(W) x 85(D)(mm)<br> Temperature sensor cable length: 3m / 9.8ft<br><br> <b>Package Include:</b><br><br> 1 x AC 110V Temperature controller w/ sensor<br> 1 x English Manual<br>