Honeywell MS4120K1000 Ruskin Actuator RLH-120

The Honeywell MS4120K1000 Ruskin Actuator RLH-120 is an electric damper actuator used in HVAC systems, air handling, and ventilation systems to fit control dampers. It transforms control signals into accurate rotary movement to control airflow in ducts and louvers. It is typically fitted on Ruskin dampers of commercial buildings and is used to control temperature, balance pressure, and outside air. The mechanical interface of the system between the building automation controller and the damper that provides the appropriate response of the airflow to the system demands is the actuator.