The Potter PS10-1 pressure actuated switches, with one set of SPDT contacts, are designed for the detection of a waterflow condition in automatic fire sprinkler systems of particular designs such as wet pipe systems with alarm check valves, dry pipe, preaction, or deluge valves. The PS10 is also suitable to provide a low pressure supervisory signal; adjustable between 4 and 15 psi ( 0.27 and 1.03 BAR). Also known as -Potter Electric PS10-1