The CoilKeeper™ Supervisory Switch (CSS) is designed to supervise the position of a coil on a solenoid for a preaction/deluge system as required by NFPA 13. The unit monitors the coil electronically and determines if the coil is installed on the valve stem. If a technician removes the coil from the stem the CoilKeeper will activate a normally open set of dry contacts that can be wired to a supervisory circuit of the releasing control panel.

Learn more by visiting the Potter website.