All doors in the D.D.U. are activated electronically by out-of-sight corrections officers in a glassed-in booth resembling the control tower of a small airport.

This three-artist show proves that paintings and electronically activated art should be kept separate.

He said that the distant signal was activated electronically by the home signal, which in turn was activated electronically by a controller in a tower some miles away.

The solenoid valve is electronically activated to shift the air flow either through the scrubber or to bypass it on a timed sequence.

They were activated electronically, but once down they were raised not by electronics but by simple mechanical means.

In addition to nitric oxide, other electronically activated species are also signal-transducing agents in a process called redox signaling.

There was also a three-speed semi-automatic gearbox that required manual shifting but used an electronically activated clutch.

The Remote Electronically Activated Control Technology belt is a make of stun belt.

The cameras are activated electronically by the driver as they pass the target.