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2. Electromagnetic lock - Wikipedia

   en.wikipedia.org/wiki/Electromagnetic_lock

   The principle behind an electromagnetic lock is the use of electromagnetism to lock a door when energized. The holding force should be collinear with the load, and the lock and armature plate should be face-to-face to achieve optimal operation. The magnetic lock relies upon some of the basic concepts of electromagnetism.

3. Safe - Wikipedia

   en.wikipedia.org/wiki/Safe

   Basic steel safe with an electronic lock. A safe (also called a strongbox or coffer) is a secure lockable enclosure used for securing valuable objects against theft or fire. A safe is usually a hollow cuboid or cylinder, with one face being removable or hinged to form a door.

4. Michigan to offer free gun locks to help owners comply with ...

   www.aol.com/michigan-offer-free-gun-locks...

   Details about Michigan's new free gun lock program are to be announced at 11 a.m. Friday at the MDHHS Greydale Office, 27260 Plymouth Road, in Redford Township. Free cable gun locks will be ...

5. Electromagnetic door holder - Wikipedia

   en.wikipedia.org/wiki/Electromagnetic_door_holder

   An electromagnetic door holder (electromagnetic door holder and release or hold-open device, sometimes informally called a mag hold open or electric doorstop) is a simple electromechanical mechanism which can be used to hold a fire door or security door open until given a signal to release. A fire alarm control panel or a similar emergency ...

6. Kane County offering free gun locks to reduce accidental ...

   www.aol.com/weather/kane-county-offering-free...

   In an effort to encourage safe firearm storage and to reduce accidental shootings and suicide risks, the Kane County Health Department is offering free gun locks to residents and gun retailers ...

7. Faraday cage - Wikipedia

   en.wikipedia.org/wiki/Faraday_cage

   Faraday cage. A Faraday cage or Faraday shield is an enclosure used to block some electromagnetic fields. A Faraday shield may be formed by a continuous covering of conductive material, or in the case of a Faraday cage, by a mesh of such materials. Faraday cages are named after scientist Michael Faraday, who first constructed one in 1836.