Modifications

A typical scenario is monitoring a place like a room or a garage. The garage has a main garage door, a side door and the space within the room (a regular room would substitute a window for the garage door). To cover the area well, a magnetic contact will be placed on each of the areas that can open/close plus a volumetric (area) sensor in case one of the other sensors fails or someone breaks in without tripping a magnetic contact. You can always go to extremes covering an area but it only costs resources (money and processor pins) without providing much more security. }}

A typical scenario is monitoring a place like a room or a garage. The garage has a main garage door, a side door and the space within the room (a regular room would substitute a window for the garage door). To cover the area well, a magnetic contact will be placed on each of the areas that can open/close plus a volumetric (area) sensor in case one of the other sensors fails or someone breaks in without tripping a magnetic contact. You can always go to extremes covering an area but it only costs resources (money and processor pins) without providing much more security. }}

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This design will use one analog sensor branch per the design diagram. The Infrared sensor and the magnetic contacts will be wired together into an analog ladder per alarm basics. These will be transmitted via Bluetooth to a monitor room inside the house. A good design has the monitor away from the area to not allow the intruder to disable the alarm easily.

This design will use one analog sensor branch per the design diagram. The Infrared sensor and the magnetic contacts will be wired together into an analog ladder per alarm basics. These will be transmitted via Bluetooth to a monitor room inside the house. A good design has the monitor away from the area to not allow the intruder to disable the alarm easily.