Does this board require an external power source

This HVAC zone valve actuator is ideal for 50/60Hz systems where precise flow control of hot or chilled water is required

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The Johnson Controls SEC99AB-48 is a professional-grade UltraCap Armored Capillary designed for high-reliability pressure connections in commercial refrigeration and air conditioning systems

Key Benefits for Technicians: Verified Compatibility: Direct OEM replacement for Lennox

Antunes Controls 803112702 Pressure Switch Els PW 17895 Does this board require anThe Antunes Controls 803112702 is a field proven RLGP A Low Gas Pressure Switch engineered for high precision monitoring in industrial combustion systems and gas trains. This SPDT gas pressure switch features an adjustable setpoint range of 2 14" W. C., providing critical safety by cutting the electrical control circuit if pressure drops below the desired threshold. Built with a rugged die cast aluminum housing, this automatic reset pressure switch is