It is also found in specific PAE

Its rugged construction facilitates more accurate flame sensing and longer service life compared to standard residential alternatives

This is a Normally Open (NO) switch

Enhanced Safety Logic: The manual reset functionality protects equipment and structures by requiring a site inspection before the system resumes operation

Robertshaw 1751-721 Wiring Harness It is also found inThe Robertshaw 1751 721 Ignitor Sensor Wiring Harness is a critical field service component engineered for flame rectification systems in residential and commercial heating applications. This 48 inch 2 wire ignition harness provides the necessary link between the ignitor sensor assembly and the ignition control module, ensuring high integrity signal transmission for consistent flame sensing. Designed for high heat environments, the 1751 721 harness