W1218 Digital Temperature Controller Thermostat Regulator DC12V -20~100℃Blue Light DC12V Item Type:Thermostat Temperature Control Range:-20~100℃ Resolution:0.1℃ When between-9.9~99.9℃,1℃ at other temperature range. Measuring Accuracy:1℃ Refresh Frequency:0.5S Approx. Return Difference Accuracy: 0.1℃ Measurement Input: NTC (10K0.5%) Waterproof Probe Output: One Way 10A Relay Instructions: Connect the power supply and load to supply power to the controller. Press STC(+)C/F(-) to set the desired set temperature. After the setting is completed, wait for 3 seconds to automatically confirm the return. At this time, the controller is set. The relay is automatically turned on and off. The output of the thermostat is 10A relay, which satisfies various high-power loads. Please ensure the correct indicator of the line and the status of the digital tube: Indicator light: Off means the relay is off, steady light means the relay is closed. Digital Tube: Display LL for sensor open circuit. The display HH is out of the measuring range. The thermostat will forcibly open the relay. Display --- for high temperature protection Parameter function description: Press and hold SET for 5 seconds to enter the main menu settings, press STC (+), C / F (-) to switch PO-P8, when adjusting PO-P8 parameters, if you need to adjust PO, while STC (+) C / F (-) Once, the PO value flashes, press STC (+) C / F (-) to adjust, after adjusting OK, then STC (+) C / F (-) at the same time confirm, P1-P8 same CF mode conversion function. Press the C/F button once to display the F mode, and then press the C/F button once, the display is in C mode, and the factory is in C mode. (Note; if the customer has a large temperature error, you may be in F mode)