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normally open door/surface contact

as118150
in Intruder Alarms

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I have not seen any on securitywarehouse product page but do anyone know of any other site where I can get normally open surface contact. are these passive or active(need power to work?)

 

thanks

  • Quote

    If SW don't do them, you can look at somewhere like RS. 524-5589 for example. Or search the web for "normally open magnetic contact" and you'll find a few. They're not active components.

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    thanks to everyone and secware for adding it on, unfortunately it came a day late as I ordered them yesterday after I found them on ebay

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