Open Close Switch (OCS)
OCS can be provided with Fire or Fire & Smoke Dampers and has the ability to indicate the blade position of the dampers. It consists of a switch box containing two switches which help indicate the fully open and fully close position of the blades. The Switches are operated by a lever connected to the damper blades. Position of the damper blades can be displayed on the Control Panel of the damper or the fire alarm Panel as desired.