Robertshaw 10-227 S1 Replacement S1 Sensor W/1/4" Quick-Connect

The Robertshaw 10-227 S1 is a replacement liquid switch sensor for HVAC equipment, measuring 32 x 1.25 x 0.25 Inches. It uses a special liquid metal that conducts electricity when heated above a set temperature. Typically installed with a 1/2 Inch NPT fitting, the 10-227 S1 is used in oil burners and gas valves within HVAC systems. When the temperature reaches its limit (between 80°F and 180°F), the liquid metal e x pands to complete an electrical circuit, signaling the burner or valve to shut down. This safety feature helps prevent overheating and ensures the safe and efficient operation of your HVAC system. The 24VAC electrical rating specifies the compatible voltage for the sensor.