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Alarm Stops Prowlers Before They Can Enter
New from Energy/Alert is an automatic door knob alarm that goes off when the knob is touched by an intruder, stopping would-be prowlers before they can enter.
The Energy/Alert alarm is battery powered and hangs on the inside door knob. The instant a hand touches the outside knob, the alarm goes off, sounding for about a minute. It then resets itself and will go off again if the outside knob is touched again.
The alarm works on standard wooden doors with metal knobs (it won't work on metal doors or on sliding glass doors). It can be used in the home or on wooden doors in fuel storage sheds or other farm buildings. It's also handy and easy to take along on trips to guard the door of your hotel or motel room.
To operate, you simply turn it on and hang it on the inside door knob. The unit then takes about 40 seconds to activate and create its detection field. During this time, you can walk out the door and lock it behind you. Upon returning home, the alarm is activated but the door can be opened quickly, allowing you to reach around in seconds and turn the alarmoff. The alarm's sound level is 80 decibels.
A 9-volt alkaline battery is used, and lasts 4 to 6 months. The Entry/ Alert sells by mail for $26.95 including postage and handling. For further information, contact: FARM SHOW Followup, Entry/Alert, 350 Rancheros Drive, San Marcos, Calif. 92069 (ph 714 744-3440).

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1981 - Volume #5, Issue #3