Global activation suppression (optional) - VdS shunt lock

The deactivation units deactivate their locks and then no longer pull the deactivation acknowledgement line to ground. The deactivation acknowledgement line becomes highly resistive. This enables the activation master to recognise that all locks have been deactivated and informs the burglar alarm system that it can activate.

You suppress this activation by keeping the deactivation acknowledgement line at ground potential. To do this, connect a potential-free contact between pin 13 and a ground pin (GND, pin 2 or pin 15). As long as the potential-free contact keeps the deactivation acknowledgement line at ground potential, the activation master cannot detect that all of the locks have been deactivated and does not inform the burglar alarm system that it should activate.

You can use this behaviour to ensure that a activation of the alarm system is only possible from the outside even without separate antenna (see Activation units with button, without separate antenna).