Door Lock Actuators

The CTD system uses the door jamb switches that are internal to the door lock actuators as one method to activate the alarm. The door modules monitor the door jamb switch via a discrete input to the appropriate door module. When the door is open the door jamb switch grounds the door open input to the door module. The CTD system uses the door lock cylinder disarm switches that are internal to the door lock actuators to disarm an armed system. When the lock cylinder is turned to the unlock position the switch grounds the disarm input to the door module.