Advanced Door AlarmsSirenlockT PG21

All-new narrow stile door alarms Convenient plug-in No-Cut jumpers . Improved 95db sweeping siren . Visual magnetic alignment mode, eliminates templates . Self-contained and dual-tamper supervised . 9V battery powered (supplied) with low battery alert. Sleek model design key-activated door alarm for use on standard size and narrow stile doors . Unauthorized use of door caused alarm to sound and activates LED indicator . Options include continuous alarm, 2 minute shutdown with auto reset and exit/entry delay . Uses standard mortise cylinder . For exterior control, optional RIM cylinder may be used