System Sensor RTS151 Remote Test Station The Fenwal 05 127324 024 is a The Fenwal 05 127324 024 is a specialized 24 inch low voltage wiring harness designed for precision interfacing with Fenwal ignition modules and integrated gas controllers The Reznor 112753 High Limit Switch is a critical safety component designed for precise thermal regulation in Reznor unit heaters Field Tested Durability: Rated for operating temperatures from 10°C to 60°C (14°F to 140°F) and up to 95% non condensing humidity Testing is performed by placing the provided M02 04 00 magnet over the designated target on the station faceplate to simulate a smoke induced alarm