The thermostat module controller has sensor input, keys, LED display and relay. It can be reprogrammed for control, timing or counting. Temperature measuring range: -50 ~ 110. Control precision: 0.1 celsius. Input Power (DC): 12V; Measurement inputs: NTC (10K 0.5%); Waterproof sensor: 0.5m; Output: 1 channel relay output, capacity: 10 A; Power consumption: static current: 35mA; Current: 65mA. Electronic digital thermostat with 3-digit LED display, red color, extremely bright. Operation in both heating and cooling to easily control equipment and devices. The output is electronically controlled by a microprocessor, to guarantee the greatest precision of intervention and excellent resolution of the temperature of reading. The NTC probe is waterproof and allows you to control the temperature even of fluids, allowing controlled heating or cooling. Note: The laminated wood case is the clear plastic case. You need to carefully tear off the outer layer of the wood, the outer layer is very thin. (It can protect the interior to prevent scratches.)And you need to assemble and install the case by yourself. Specifications: Dimensions: 48.5 * 40 * 15.8 mm Temperature control mode: ON/OFF Temperature range: -50 - 110 Resolution: When the temperature is 0.1, the resolution is -9.9 to 99.9, the other temperature segment is 1 Control accuracy: 0.1 Hysteresis accuracy: 0.1 Refresh rate: 0.5 s High temperature protection 0 - 110 Power voltage: 12 V DC Static current: less than 35 mA, pulling current less than 65 mA Output voltage: 12V DC Output power: 20A relay Measuring input: NTC waterproof sensor (10K 0.5%) Environmental requirements: -10 - 60 ; Humidity: 20% - 85% Instructions for use: Connect the power supply and equipment, the measurement temperature is displayed, press "SET" button, press "+ or -" to set the desired temperature (long press "+ or -" to quickly increase or decrease), press "SET" to confirm setting and return, the controller automatically executes the ON/OFF relay. The thermostat output is a 10A relay, meets a variety of high-power loads. LED indicator: LED off indicates the relay is off; Lighting indicates the relay is closed. Digital LED tubes: LL indicates the sensor is open, HH indicates over-range, the relay will be forcibly disconnected; "---" indicates high temperature alarm Long press "SET" button to enter main menu settings, press "+ or -" to switch between P0-P6, then long press "SET" or 10 seconds without keys to confirm the setting and return. Return to factory settings ----- When power off, press and hold the + - key. Then power on, it will display "888" to restore factory settings. Package includes: 1 piece 12V DC digital temperature controller board with transparent acrylic case