W1209 DC 12V heat cool temp thermostat temperature control switch temperature controller thermometer thermo controller W1209 DC 12V heat cool temp thermostat temperature control switch temperature controller thermometer thermo controller _x000D_ _x000D_ Product Introduction: W1209 case Weight: 24 grams Shell size: 59.3mm * 50.3mm * 14.5mm Attention: Each board comes with double-sided protective film, which needs to be peeled off before use Product Parameters: W1209 module Temperature control range:-50C-110C Input voltage:DC12V Temperature measurement accuracy:0.1C Brush frequency: 0.5S Temperature measurement input: NTC (10K0.5%) waterproof line pyrometer Power consumption: quiescent current temperature set point, refrigeration relay absorption chiller start; when the temperature measurement value temperature set point - back to the difference, refrigeration relay disconnect, the chiller off. Heating mode: When the temperature measurement value temperature set point, the heating relay is engaged and the heater is activated; when the temperature measurement value > temperature set point + return difference, the heating relay is disconnected and the heater is turned off. P1 Return difference setting. Long press SET for 5 seconds to display P0, press eleven to switch to P1, press SET once to set the value of return difference, press ten- to set the return difference as 0.1-15, press SET once to return after completion, long press SET or 10 seconds without key action controller automatically confirms the completion. In cooling mode. When the temperature measurement value > set value, the relay will absorb, and the cooler will start; when the temperature measurement value set value - return difference value, the relay will disconnect, and the cooler will shut down. For example, the environment for the 30 set value of 25 , the return difference is set to 2 , power on the relay closure chiller start, when the cooling to 23 , the relay disconnect