The DPS120 series pressure type supervisory pressure switches shall be installed on system piping as designated on the drawing and/or as specified herein. Switched shall be provided with 1/2” NPT male pressure connection and to detect an increase and/or decrease from normal system pressure in automatic fire sprinkle system. Typical applications are: Wet pipe system with excess pressure, pressure tanks, air suppliers, water suppliers. The DPS120 series pressure switches are factory set for use in a normal 120psi system. The DPS120-1 is factory set to respond at 110psi at decreasing pressure and DPS120-2 is factory set to respond at 130psi at increasing pressure and 110psi at decreasing pressure

S 302.07actory Setting DPS120-2 operates at increasing pressure at 130psi

Differential • Contact Ratings: DPS120-1: One set SPDT (Form C)

2.0Amps at 24 VDC