Exact(2)
The object is bolted to the top layer, and the whole thing is secured by an electric lock that releases when a sensor detects movement.
An electric lock controlled by a foot touch switch allows a free fall until the silicone tip hits the animal's exposed skull.
Similar(6)
Electric windows, electric locks, electric trunk catches were the latest gadgets.
As anyone who has opened a car with electric locks knows, solenoids are far from silent.
An A320 operating manual for planes used by the Royal Jordanian airline shows a forward opening door with three electric locking strikes.
It adds a two-speed transfer case with a burly low-range gear ratio, steel-plate underbody armor and rock rails; electric locking for the front and rear axles; an electronic sway-bar disconnect; and knobby 32-inch off-road tires.
For example, he said, if a building has a service entrance, it might be wise to have an electric locking device on the door that can be opened by a building employee in the lobby who is monitoring the service entrance over a closed circuit television camera.
And while additional equipment is needed to install an entire system -- including a controller panel, a computer, software and an electric locking mechanism on the door -- it is possible to install a state-of-the-art biometric access control system in a building for less than $10,000.
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