Tech Talk Q & A for May 2002

Q: We have proximity readers at a high school and before our install was even completed, the students had started ripping the covers off. We are limited in space for mounting readers (must be on the mullion). Have you seen
any creative ways to make these things “teenager proof”?

A: Take a look at Keri Systems ( They make the MS-4000 ShootingStar vandal resistant mullion prox reader. This tough reader is designed for high crime areas. It has a beveled stainless steel housing so it cannot be pried from its mounting place, has a front surface that can withstand a bullet from a .357 or 9mm handgun and is flame resistant. In addition to the normal front mounting holes, it also has rear “blind” mounting screw holes for extra security. Lifetime warranty. 

Q: I recently won a contract from a builder to alarm all his new houses in a small development. Unfortunately, the windows used do not allow any drilling,  so everything must be stuck on. I need some sort of double-sided tape/pad to apply to the sensors and contacts.

A: There are a few options that you can use here. If you are looking for a good selection of tape you can contact a professional tape distributor such as Tape Monster ( for a good permanent bonding, double-stick tape. You can also use glue adhesive such as RTV or 3M from your alarm distributor, or you might want to try clear Liquid Nails from your local hardware store.  Many installers have mentioned that they really like the Liquid Nails. Make sure to get the small tube and not the big caulking gun size. Make sure the surfaces are thoroughly clean with an alcohol wipe before applying. If you are mounting magnets in the track of sliding doors you may want to check out the MC-25, a unique magnet holder from George Risk Industries (

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