KNACRO Digital Thermostat DC 24V -9~99x2103 Temperature Controller Board Electronic Temperature Temp Control Module Switch with 10A One-Channel Relay and Waterproof Sensor Probe

Temperature range: -9 ~ 99 ? Temperature measurement accuracy: 1 ? Control accuracy: 1 ? Range: -9 ~ 99 ? Refresh rate: 0.5S Input power: DC 24V Measuring input: NTC (3950-10K 1%) waterproof sensor Output: relay output, capacity 220V10A / 12V 10A Environmental requirements: -10 ~ 60 ? Humidity 20% to 85% Weight:49g / 1.7 oz Size: 79 * 52 * 25 mm / 3.08 * 2.02 * 0.97 in(L * W * H) Lights, digital control, key state Description: Start indicator: START (red) indicator light, said the relay is closed, the machine starts to work. Stop lights: STOP (green) indicates the relay off, the device stops working. Digital: middle red LED display current temperature detected, the left green LED to set the start temperature, the green LED on the right to set the stop temperature.