The 900 series pressure switch is a rugged instrument capable of superb operation in harsh environments. Bellows sensor technology is used in this world wide marine approved pressure switch. We offer a broad selection of pressure ranges from -13 to 1500 psi. Connection options include 1/4" npt, 1/2" npt, G1/4" and G1/2" female. This bellows pressure switch will operate trouble free under aggresive media temperature ranges of -40 to +300 degree farenhite. For ease of switch point settings this unit offers a visual sliding scale window, so no additional gages are required. The 900 series is an excellent chioce for nearly all switching requirements.