Key Benefits: Precise Pressure Calibrations: Features a factory-set 400 PSI open and 300 PSI close threshold for accurate high-pressure protection

Is the output polarity sensitive

the "R" designation indicates the current manufacturer-spec updated version for the older 667278 model

The 5502-136M features a standard 2-1/8 inch "D" stem

Honeywell MS7520A2007 Actuator Refrigerant Key Benefits: Precise Pressure Calibrations:The Honeywell MS7520A2007 is a heavy duty S20 Series Spring Return Direct Coupled Actuator designed for precise control of dampers and valves in commercial HVAC systems. This 24V damper actuator delivers 175 lb in (20 Nm) of torque, making it a reliable solution for air handling units, economizers, and vent structures requiring fail safe performance. It supports modulating (0 2 10 Vdc), 4 20 mA (with included 500 Ohm resistor), and floating control