This is a simple - easy to build - latching relay circuit
COMMENTS Homer SUGGESTIONS

Untimed Output Module - Photograph

MORE ALARM CIRCUITS

One Time Only
Alarm - Schematic
The Rest of Ron's Circuits Write To Ron More Free-to-Use Circuits Circuit Exchange International


Circuit Board

This is a photograph of the Untimed Output Module. After the siren output switches off - this module will continue to supply power to other devices. You may want to use it to power a strobe light or an internal siren. If you connect a suitable relay to the module's output terminals - you can use the relay contacts to control anything you like - such as internal or external lighting. You can add as many of these Modules as you like to the One Time Only Alarm.

A Photograph Of Ron J's
One-Time-Only Alarm - 
Untimed Output Module


Click here if you're new to constructing stripboard projects.

One Time Only
Alarm - Schematic
The Rest of Ron's Circuits Write To Ron More Free-to-Use Circuits Circuit Exchange International