Electromagnetic Alarms Bear DE
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...
Philadelphia Flower Show 2018
Dates: 3/4/2018 – 3/11/2018
Pennsylvania Convention Center Philadelphia
1101 Arch Street
The Philadelphia Flower Show, internationally recognized as one of the nation's premiere events as well as the oldest and largest indoor show of its kind, is produced by the Pennsylvania Horticultural Society. PHS has more than 15,000 members throughout the country, offers hundreds of educational programs year-round, and is considered the nationâ�TMs leading authority on urban renewal through greening. PHS's acclaimed Philadelphia Green program restores neighborhood parks, creates community gardens, conducts large scale tree plantings, revitalizes vacant land, engages thousands of citizens in community development activities and maintains treasured public landscapes. Its greening efforts are modeled in many cities across the country.Not sure if you want to exhibit at or attend the Philadelphia Flower Show 2018? See the panels below to get the information you need to make an informed decision.All information in Events In America is deemed to be accurate at the time we add it,and we take steps to verify all details and update our records when new information is provided, but as people, events and circumstances change, we caution users to independently confirm all information. EventsInAmerica.com and Events In America LLC make no guarantee of accuracy and assume no liability for inaccurate information.