I have built a 12v battery powered driveway alarm that works through a bosch automotive relay to an adjustable time delay off relay.
The diagram I have is drawn shows 2 relays the second is actually the time delay off relay.
( https://www.amazon.com/GEREE-Module-External-Trigger-Automotive/dp/B01DDCLA3M
The alarm works well enough with a momentary contact switch. But if the switch doesn't make long enough contact the relay won't initiate the time delay reset (power disconnect not long enough). Also if the switch is contacted and not released at all, the time delay relay won't activate until the switch is released. I dont want someone figuring out that they can trigger the switch and disable the alarm by keeping pressure on it.
Any suggestions/diagrams for a solution would be appreciated. (Thinking about installing another time delay relay but setting it for short time delay on if switch contact is made without being released.)
The diagram I have is drawn shows 2 relays the second is actually the time delay off relay.
( https://www.amazon.com/GEREE-Module-External-Trigger-Automotive/dp/B01DDCLA3M
The alarm works well enough with a momentary contact switch. But if the switch doesn't make long enough contact the relay won't initiate the time delay reset (power disconnect not long enough). Also if the switch is contacted and not released at all, the time delay relay won't activate until the switch is released. I dont want someone figuring out that they can trigger the switch and disable the alarm by keeping pressure on it.
Any suggestions/diagrams for a solution would be appreciated. (Thinking about installing another time delay relay but setting it for short time delay on if switch contact is made without being released.)