A sensor gradually activates the battery-powered motor as you pedal harder, up to 15 miles an hour.

Such sensors would activate large flashing warning signs aimed at errant drivers.

A sensor measures the outside humidity and then activates a ventilator, which blows air over a humid sponge or water tank into the humidor.

The activated sensor will further activate a pump that dispenses a premeasured amount of soap from the nozzle.

"At no time during the evaluations did the sensor activate, stop the door and prevent the introduction of the test objects," the documents report.

But this time, the sensors from this very room had activated the alarm.

These sensors then activate a water vapour mechanism to put out the fire.

As your car enters the garage, an ultrasonic sensor activates a green light.

The sensor, made from a hatch closer on Wildside, would activate a valve as soon as Hutch's lander passed through.

The sensors we placed underneath the road picked up your car and activated a remote camera," the contractor said proudly.