ELECTRONICS - [alarm system] - [page 7/8]

Home alarm system

Errors/Could Do betters

The system has been confirmed to work for over 13 years now. I only had to go repair it one time: a reed relay on a door had failed. It had absolutely nothing to do with my design.

Some parts could have been developed better though:

There is no battery backup system.
The battery has a limited capacity
There is no room for future expansions
The code lock allows an unlimited amount of wrong codes.
There is no alarm trigger when the case is opened.