HW-559 Digital Thermostat Smart Temperature Control Thermometer Module, 501 Original

HW-559 Digital Display Thermostat Relay Board Precision Intelligent Temperature Control Thermometer ModuleFeature:1. High temperature start-refrigeration mode: when the start temperature value is set> the stop temperature value, when the detected temperature ≥ the start temperature, the relay is closed and the refrigeration equipment works;When the detected temperature is less than or equal to the stop temperature, the relay is disconnected and the refrigeration equipment stops working.For example: set the start temperature to 30°C and the stop temperature to 25°C. When the detected temperature value is greater than or equal to 30°C, the relay is closed and the start indicator light (red) is on; when the detected temperature value is less than or equal to 25°C, the relay is disconnected and stops indicating The light (green) is on.2. Low temperature start-heating mode: when setting the starting temperature value