the unit comes with one set of trippers

The Ranco O16-166 Pressure Control is a heavy-duty SPDT refrigeration pressure switch engineered for high-precision regulation in commercial HVACR systems

Key Benefits Efficient Flow Control: The 3 Cv rating allows for high-volume throughput in a compact 3/8" footprint

Precise Ignition Timing: Manages the furnace ignition sequence from pre-purge to flame verification with exacting precision

Key Benefits ASME Section IV Certified: National Board capacity certified for high-output hot water heating systems

Antunes Controls 804111705 Pressure Switch Freon the unit comes with oneThe Antunes Controls 804111705 Pressure Switch is a high performance HLGP A gas pressure switch engineered for precision monitoring in industrial gas trains, boilers, and commercial HVAC combustion systems. This dual function high and low gas pressure switch features adjustable ranges of 5 28"wc high and 2 14"wc low, offering comprehensive protection by cutting the electrical control circuit when pressures drift outside safe limits. Built with a