central locking interface

Posted on Feb 5, 2014

Some cheap car alarms do not have a connection for the central locking system. However, in most it should be possible to find a point in the alarm circuit which is high when the alarm is activated and low when it is off. This signal can then be used to drive this relay circuit to operate the central locking system. The interface circuit converts e

central locking interface
Click here to download the full size of the above Circuit.

ach toggle of the alarm signal to a brief pulse to operate the two relays which then are then connected in parallel with appropriate contacts on the master solenoid in the central locking system.

Leave Comment

characters left:

New Circuits



Popular Circuits

Ford Probe Single Wire Door Lock/Unlock Alarm System Circuit Schematic
Inverter circuit for soldering iron
555 Timer with a Speaker
Final Project circuit
Simple AM radio
Arduino Eye Shield
Simple Easy Parametric and Graphic EQs Plus Peaks and Notches
Complete SS Laser Power Supply Schematics
Tesla HV Coil
high-level accessory front end for the HF amateur bands
Single-speed motor excitation from the electrical braking circuit
LC filter and LC type filter circuit
Common emitter amplifier works a