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2. Electric gate - Wikipedia

   en.wikipedia.org/wiki/Electric_gate

   Electric gates alone, however solid and imposing they may be, cannot guarantee a completely secure environment electric locks, are often needed to boost the locking effectiveness of the gate motors. Electric gates are recommended to be used in combination with other security features to install a full security system .

3. Electric fence - Wikipedia

   en.wikipedia.org/wiki/Electric_fence

   An electric fence is a barrier that uses electric ... and reduced the cost of fencing by more ... to a predetermined "virtual fence" without a physical installation.

4. Electronic lock - Wikipedia

   en.wikipedia.org/wiki/Electronic_lock

   Electric strikes (also called electric latch release) replace a standard strike mounted on the door frame and receive the latch and latch bolt. Electric strikes can be simplest to install when they are designed for one-for-one drop-in replacement of a standard strike, but some electric strike designs require that the door frame be heavily modified.

5. Cattle grid - Wikipedia

   en.wikipedia.org/wiki/Cattle_grid

   Electric cattle grids use electricity to deter animals from crossing the fence line. There are different designs. One uses high-tensile wire run across the roadway, about 3 to 4 inches (8 to 10 cm) off the ground, attached to a power source on one side. [17] The primary advantage is cost and ease of installation. [18]

6. AOL

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   The search engine that helps you find exactly what you're looking for. Find the most relevant information, video, images, and answers from all across the Web.

7. AOL.com - News, Sports, Weather, Entertainment, Local & Lifestyle

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   AOL latest headlines, entertainment, sports, articles for business, health and world news.