The Rapidrop Model RD-PS is a Pressure Actuated Switch

designed for the detection of a change in waterflow

conditions in automatic fire sprinkler systems, including

Wet pipe systems, Dry pipe systems, Pre-action systems

and Deluge systems. The Model PS is also suitable to

provide a low-pressure supervisory signal and is available

in three configurations, PS10-2, PS40-2 and PS120-2. The

cover is secured with tamper resistant screws and is

suitable for indoor or outdoor use.