<b>Specifications:</b><br> Model: W1209<br> Dimensions: 48.5 * 40mm<br> Temperature Control mode: ON / OFF<br> Temperature Range :-50 - 110 degree centigrade<br> Resolution: When temperature is 0.1 degree, the resolution is -9.9~99.9, other temperature segment is 1 degree.<br> Control Accuracy: 0.1 degree<br> Hysteresis Accuracy: 0.1 degree<br> Refresh Rate: 0.5s<br> High Temperature Protection 0 - 110 degree centigrade<br> Supply Voltage: DC 12V<br> Static Current: Less than 35MA, attract current less than 65MA<br> Output Voltage: DC 12V<br> Output Power: 20A relay <br> Measurement Input: NTC (10K 0.5%) Waterproof Sensor<br> Environmental Requirements: -10 - 60 degree centigrade; Humidity 20% - 85%<br><br> <b>Instructions for use:</b><br> Connect the power supply and equipment, the measuring temperature is displayed, <br>press the "SET" button, press " + or - " to set the desired temperature (long press " + or - " to quickly increase or decrease), <br> press "SET" to confirm the setting and return, controller automatically performs the relay ON/OFF. <br> the thermostat output is 10A relay, meet a variety of high-power loads. LED Indicator: LED off indicates the relay off; Lighting, indicates the relay is closed. <br> Digital LED Tubes: "LL" indicates sensor open, "HH" indicates overrange, the relay will be forcibly disconnected; "---" indicates high temperature alarm <br> Long press the "SET" button to enter the main menu settings, <br> press " + or - " to switching between P0-P6,<br> then long press "SET" or 10 seconds without keystrokes to confirm the setting and return.<br><br> <b>Package Included:</b><br> 2*W1209 12V DC Digital Temperature Controller Board