This is a standard safety sequence

Pneumatic Electric Relay

While originally specified for legacy refrigerants

and necessary sensors to ensure a complete and reliable field repair

Honeywell MS7510A2008 Actuator Els PW 17895 This is a standard safetyThe Honeywell MS7510A2008 Actuator is a spring return direct coupled actuator (DCA) engineered for precise control of HVAC dampers in commercial air handling systems. This unit provides 88 lb in torque and is designed to accept multiple control signals, including 0 2 10 Vdc, 4 20 mA (via the included 500 Ohm resistor), floating, and on off SPDT. Operating on a 24Vac Dc power supply, it features a self centering clamping adapter that accommodates 3 8"