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Electromagnetic Alarms Grand Forks ND

Local resource for Electromagnetic Alarms in Grand Forks. 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.

Sterling Security
(701) 780-9894
3111 S Washington St
Grand Forks, ND
 
Newvlsion Security Systems
(701) 746-0505
402 University Ave
Grand Forks, ND
 
Stone'S Mobile Radio
(701) 772-6691
1550 47th Ave S
Grand Forks, ND
 
Access Security
(701) 775-8199
1726 S Washington St
Grand Forks, ND
 
Ipc International
(701) 746-7200
2800 S Columbia Rd
Grand Forks, ND
 
Northern Safety & Security
(877) 751-3902
4111 Technology Dr NW No 203
Grand Forks, ND
 
Laser Systems Inc
(701) 746-1080
2600 Demers Ave Ste 113
Grand Forks, ND
 
Simplex Grinnell
(701) 746-4191
830 S 48th St # 8
Grand Forks, ND
 
Grand Forks Fire Equipment
(701) 746-6463
921 N 3rd St
Grand Forks, ND
 
Newvision Security Systems
(701) 746-0505
402 University Avenue
Grand Forks, ND
 

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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