30 May '14, 8am

Homemade Alarm System Doesn’t Lack Features

In my opinion, the best way is still to grant the arming/disarming module function accessible before the door entry (as much as you can, and well hidden); Which mean exit the keypad and rather use RFID (hide the reader behind a thick wall or wood), RF or even IR. You might as well add a status led or a buzzer that will let you notice if you activated or deactivated the system. The benefit of doing it, in my opinion, is that you can reduce (or even remove) the delay before you trigger after a door entry detection. It will highly discourage the burglar if when he opens the door, the siren show up immediately and every second he fails to disable the alarm will scare him gradually.

Full article: http://hackaday.com/2014/05/30/homemade-alarm-system-does...

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