Series RSS-495/498 switches feature customer-specified fixed set points between 0.12″w.c. and 4.00″w.c. They can be used to sense positive, negative or differential air pressure, and are available with various sample line connections, terminal styles, and mounting arrangements.

The thermoplastic housing contains a sensing diaphragm and includes the externally-mounted snap-acting switch.

Sample line connectors are located on either or both sides of the diaphragm to accept air sample connections. The electrical connection consists of male quick-connect terminals.

The snap action switch can be actuated by a pressure or vacuum air flow, or by a pressure or vacuum differential.