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Universal Compatibility: Directly replaces part 5H79441-2
and CT gas boilers across all BTU sizes
Smith 100208373
Always verify the electrode gap and ceramic insulation integrity during installation to ensure optimal spark transfer and system safety
Designed for industrial-scale panel device installation
Johnson Controls A421ABC-02 Temperature Control Els PW 17895 Universal Compatibility: Directly replaces partThe Johnson Controls A421ABC 02 is a professional grade electronic temperature control engineered for high accuracy performance in demanding HVACR environments. Operating on a versatile 120 240 VAC power supply, this single stage SPDT control provides a wide regulation range from 40F to 212F. It serves as the primary digital thermostat upgrade and direct cross replacement for legacy models including the A419ABC 1, A320ABC 1, and A319ABC series. The