https://www.quick-switch.com/Quick-Switch-QS-904MAL-Universal-Bar-Switch-p/qs-904mal.htm
Quick Switch QS-904MAL Universal Bar Switch (4' Leads, Open & Closed Loop)
Quick Switch designs, manufactures, and sells various reed switches and electric components to the security and electric industry. The Quick Switch QS-904MAL...
quick switchopen closedqsuniversal