This section contains intruder alarms for your home, car and motorcycle, power failure and water level alarms and even a snore
detector. All circuits are listed alphabetically on the
Circuit Index page and in date order on the update page. All contributors are listed
on the credits page.
If you have problems try my help page first. Most circuits on this site use
SI Notation. Due to large volumes of email, I regret that I can only
answer questions about circuits on my site.