The Telemecanique 9012GHW1 is a robust electromechanical pressure switch designed for industrial automation. It features an adjustable scale with two thresholds, allowing for precise monitoring of pressure differences. Built with a durable die cast aluminum alloy enclosure and nitrile (Buna-N) diaphragm, this switch is suitable for a variety of controlled fluids including hydraulic oil, non-corrosive liquids, air, and non-corrosive gas within a temperature range of -40 to 250 °F. It offers reliable performance with snap action contacts and is certified for use in various industrial applications.The Telemecanique 9012GHW1 is an electromechanical pressure switch from the 9012G range. It is designed to monitor the difference between two thresholds and features an adjustable scale. The switch has a maximum pressure rating of 850 psi and a fluid connection type of 0.25 inch 18 NPTF. It is equipped with NC-NO, SPDT-DB, Form Z contacts made of silver nickel. The enclosure is constructed from die cast aluminum alloy 380, and the pressure actuator and materials in contact with the fluid are nitrile (Buna-N) and zinc plated steel. The switch has a 0.5 inch NPT conduit entrance and uses screw-clamp terminals for electrical connection, supporting AWG 22 to AWG 12 wire sizes. It is certified to CE, CSA C22.2 No 14, and UL 508 standards, with CSA LR25490 class 3211 03 and UL listed certifications, including UL listed Marine. The enclosure provides NEMA 4/4X/13 protection.