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The Robertshaw 10-681 Flame Sensor is a high-sensitivity monitoring component engineered for precise flame rectification in residential and commercial gas-fired systems
Measuring approximately 1/2 inch in length with a 1/4 inch outer diameter
Its compact footprint is ideal for high-density replacement HVAC relays in tight control cabinets
This genuine Trane replacement part maintains original equipment tolerance and response times required for professional service standards
it triggers the exhaust fan as attic temperatures climb
Rheem-Ruud 42-21268-04 Door Switch Els PW 17895 The Robertshaw 10-681 Flame SensorThe Rheem Ruud 42 21268 04 Door Switch is a critical safety component designed for precise interlock control in residential and commercial furnaces and air handlers. For technicians servicing Rheem, Ruud, WeatherKing, and Corsaire HVAC systems, this SPST (Single Pole Single Throw) safety switch is the primary mechanism for breaking the electrical circuit when the blower compartment door is removed, mitigating risk of electrical shock or mechanical