1. Easy to use and install, use flexibly 2. Security and reliability for the air-tight stainless steel sensor. 3. VED, UL Description: Mainly used in high or low pressure protect control of air condition cooling 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 range: extra-high ...