Alarms and Indicator Circuit diagrams :
- Power supply failure alarm
- Theft preventer alarm
- Rain Alarm
- A simple electronic buzzer
- Water Level Indicator with alarm
- Melody generator for greeting cards
- 4 in 1 burglar alarm
- Brakelight Flasher
- Car anti theft wireless alarm.
- Fire Alarm
- Daylight Alarm
- Factory Siren
- Police Siren
- Big Ben Sound
- Beeper
- Infra-red (IR) beam alarm/ proximity detector
- Timed Burglar Alarm
