Item Type:Thermostat Module Temperature Measuring Range:-9~99 Control Accuracy:1 refresh rate:0.5S Working Temperature:-10~60 Working Humidity:20~85% Measuring Input:NTC(3950-10K 1%)Waterproof Sensor Temperature Measuring Accuracy:1 Setting Range:-9~99 Input Voltage:DC9~15V Size:78 x 51mm / 3.07 x 2.01in Output:Relay Output,Capacity 12V10A Start indicator: The START (red) indicator is on, indicating that the relay is closed and the device is working. Stop indicator: STOP (green) indicator is on, indicating that the relay is disconnected and the device stops working. Digital tube: The middle red digital tube shows the current detected temperature, the left green digital tube is the set start temperature, and the right green digital tube is the set stop temperature. Button: START "" sets the starting temperature; STOP "" sets the stop temperature Mode introduction: 1. High temperature start-up cooling mode: When setting start temperature value> stop temperature value, when the detection temperature start temperature, the relay is closed, the refrigeration equipment works; when the detection temperature stop temperature, the relay is disconnected, and the refrigeration equipment stops working.For example: set the starting temperature to 30 C, the stopping temperature is 25 C, when the detected temperature value 30 C, the relay is closed, the start indicator (red) is on; when the detected temperature value is 25 C, the relay is off, stop indication The light (green) is on. 2. Low temperature start-heating mode: When setting the starting temperature value stop temperature value, when the detected temperature start temperature, the relay is closed and the refrigeration equipment is working; when the detected temperature stop temperature, the relay is turned off and the refrigeration equipment stops working. 4Low temperature start-heating mode: When setting the starting temperature value <stop temperature value, when the detected temperature the starting temperature, the relay is closed and the heating device is working; when the detecting temperature the stopping temperature, the relay is disconnected and the heating device stops working. 5With indicating light to indicate the working condition.