Re: "Magnet tamper" for surface mount contact?

["Crash Gordon" <webmaster@xxxxxxxxxxxxxxxxxxxxx>]

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"Jackcsg" <nospam@xxxxxxxxxx> wrote in message
news:V_qdnW3Ik6q2mK7eRVn-hg@xxxxxxxxxxxxxxx
| What you're looking for is called a "BMS" (Balanced Magnetic Switch) I
| believe both Ademco, and Sentrol have a model for the application.
|
| "Bill" <bill190nospam@xxxxxxxxx> wrote in message
| news:3pg9auFa8cclU1@xxxxxxxxxxxxxxxxx
| > Is there a surface mount contact which has some sort of tamper device if
| the
| > magnet is unscrewed from the door? Manufacturer? Model number?
| >
| > This would prevent the situation where there is a door which opens out,
| > there is a surface mount contact on the door frame, a surface mount
magnet
| > on the door - then intruder attaches magnet to above contact in some
| manner,
| > unscrews magnet from door, then opens door outwards.
| >
| > So unscrewing the magnet from the door or unscrewing the covering over
the
| > magnet to then unscrew the magnet from the door would trip the
contact...
| >
| > FYI - This is when the intruder gains access through the ceiling or
wall,
| > but then exits through a door.
| >
| >
|
|