Vintage 50s Devil Dog Universal Shaker Vibration Motion Switch Sensor Alarm on 2040-parts.com
Bristol, Connecticut, United States
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Vintage "Devil Dog" style shaker vibration motion sensor switch made by Universal Security Instruments, Owings Mills / Baltimore, Maryland, USA. This is equivalent to the so-called "Devil Dog" shaker switch. Model # U-2AS
We think these "Devil Dog" style sensors are no longer manufactured. The photo of the car appears to be later 1970s, but these shaker switches looked the same in the 50s and 60s. Universal Security Instruments no longer sells these. New, in original unopened package. Includes instruction sheet sealed inside the package. See photo of the typical instruction sheet. These were popular in the in the 1950s, 60s, 70s, maybe into the 80s as a motion sensor in a vehicle theft alarm. For sensing disturbance of a vehicle such as by jacking, towing, possibly entry (if set to high sensitivity), or other disturbance. Sensitivity is adjustable with screw and locking nut located on top. Case is typically grounded through the mounting screw to metal mounting surface, or a ground wire can be added with ring lug and wire using the mounting screw if the mounting surface is fiberglas or other rigid plastic. The electrical terminal on top provides a momentary ground signal when sensor is disturbed- typically used with some type of latching relay or latching circuit. Shipping will be $6.00. |
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