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Electromagnetic Alarms Helena MT

Local resource for Electromagnetic Alarms in Helena. Includes detailed information on local businesses that provide access to Electromagnetic Alarms, keyless entry, garage door opener, driveway alarm, as well as advice and content on electromagnetic and electronic alarm system retailers and stores in your location.

Akal Security Inc
(406) 449-7254
901 Front St
Helena, MT
Simplexgrinnell Co
(406) 443-3660
1409 Helena Ave
Helena, MT
Eagle Satellite Tv
(406) 442-9091
1100 Waukesha Ave
Helena, MT
Platt Electric
(406) 442-5947
760 Colleen St
Helena, MT
Kenco Security & Technology
(406) 443-7333
3228 Centennial Dr
Helena, MT
Information Systems
(406) 443-8323
2114 E Broadway St
Helena, MT
Montana Lock And Security Inc
(406) 449-4555
126 E Lyndale Ave
Helena, MT
Burdick'S Locksmith
(406) 449-6420
901 N Last Chance Gulch
Helena, MT
Computer Institute Of Rockies
(406) 449-4499
104 E Broadway St Ste 10
Helena, MT
A & U Security
(406) 458-9668
813 Rinay Rd
Helena, MT

Electromagnetic Detection

Most intrusion detection systems in use today utilize some form of electrical circuit running through wires, mechanisms, metalized tape or foil. If any part of the electric circuit running through two pieces of metal in the door locks or window lock mechanisms , or if a strip of metallic tape on the window glass is broken, it trips an alarm.

Circuits work well when an intruder attempts entry as one would expect, by opening a door or window. Burglars however, know how to use crowbars and other burglary tools to get through doors without disrupting these electrical circuits. In warm climate regions, houses may have thin walls, and entry can be gained by cutting through a wall. Tape or wire mesh in the wall would have to be torn or cut through to gain entry, thus tripping the security alarms .

Limitations occur in a circuit system because the gap or break can be bridged when the burglar breaks the tape or magnetic connection with a long wire or piece of metalized tape, prying open a door or window frame without setting off the alarm.

Magnetic Contact Circuits

Electromagnetic systems are often used on doors to apartment buildings and secure areas in government offices. They use a magnet in one sealed enclosure and a switch in another sealed enclosure and when the magnetic contact is broken, the alarm signal sounds.

In order to open a door protected with a magnetic door latch, a button has to be pushed by an attendant to allow the door to be opened by the visitor...

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