maintaining precise spark gap alignment is essential for consistent light-off

the Trane CNT03781 (updated part number) offers a seamless drop-in replacement for failed normally closed (NC) limits

The Resideo Q4100C9060 is specifically a silicon carbide replacement

Safety First Construction: Features a physical interrupter and non-PCB oil to meet rigorous safety protocols

drawing approximately 18mA at 24VDC

Johnson Controls T-4000-2141 Plastic Cover maintaining precise spark gap alignmentThe Johnson Controls T 4000 2141 is a commercial grade beige plastic thermostat cover designed specifically for horizontally mounted pneumatic thermostats. This impact resistant housing provides a professional finish for pneumatic control systems while protecting internal components from dust and debris. Engineered for the T 4000 series, the cover features a clean aesthetic with the Johnson Controls logo and a single set point window for clear