Motion Detector Telephone Alarm

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For $79, this might be useful for all sorts of fun projects – “The Telespy Motion Detector Telephone Alarm, a standard telephone features a built-in PIR motion sensor. If an intruder is detected within a 30 ft. range, TeleSpy calls a preset telephone number and allows you to listen in to the premises. Great for protection of homes, businesses, vacation homes and warehouses.” [via] Link.

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