Anfield Sensors SPA-3-4M-C-HC Low Pressure Switch, SPDT, 1/4" NPT Male Connection, DIN 43650A Electrical Connection, Adjustable Range Input: 25-150 PSI
The SPA series switch is a compact pressure switch utilizing a high quality snap action micro switch for applications in which price and size are of concern. Suitable for pneumatic, water and low pressure hydraulic applications.