Build this two-zone vehicle alarm using cheap off-the-shelf components. It's suitable for all types of vehicles - including caravans and mobile homes.
COMMENTS Homer SUGGESTIONS

Car Alarm - Photograph

THREE
HIJACK
ALARMS

Vehicle Alarm
Schematic
The Rest of Ron's Circuits Write To Ron More Free-to-Use Circuits Circuit Exchange International


Circuit Board

This is a photograph of the Cmos based Car Alarm circuit board. It features Exit and Entry delays - an Instant Alarm Zone - an optional Intermittent Siren Output - and Automatic Reset. By adding external relays you can immobilize the vehicle and flash the lights.

A Photograph Of Ron J's 
Car Alarm - Circuit Board


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Vehicle Alarm
Schematic
The Rest of Ron's Circuits Write To Ron More Free-to-Use Circuits Circuit Exchange International