Technical parameters: Temperature Control Range: -50 to 110 degree Input Power: DC 12V Resolution: -9.9 to 99.9 is 0.1 degree, other temperature ranges 1 degree Measuring Inputs: NTC (10K 0.5%) Waterproof sensor Measurement Accuracy: 0.1 degree Output Range: 1 channel relay output, capacity is 10A Control Accuracy: 0.1 degree Environmental Requirements: -10-60 degree, humidity 20% -85% Hysteresis Accuracy: 0.1 degree Size: 48 x 40mm Refresh Rate: 0.5S Power Consumption: Static Current: less than or equal to 35MA, attract current: less than or equal to 65MA Temperature Protection: 0-110 degree Display Type: 0.28" three digital display tube