... and install, use flexibly 2. Security and reliability for the air-tight stainless steel sensor. 3. VED ... control of air condition cooling system, no matter for house-use, commercial-use, auto-mobile, it ... use and install easily, no special need for the mounting fixing. 2.Plugging or wiring connection ... 3.SPST or SPDT, normal close, normal open for switch connection can be made as the customer required. ...