... to use and install, use flexibly 2. Security and reliability for the air-tight stainless steel sensor. 3. VED, UL ... system, no matter for house-use, commercial-use, auto-mobile, it is also fit for other equipment. Classfication: 1)Reset methords: manual reset, auto reset. 2)Pressure ... ' requirement. 3.SPST or SPDT, normal close, normal open for switch connection can be made as the customer required. 4 ...