discostuee
Member
Hi.
I have a reed switch i would like to add on my door that if its left open too long (variable time adjust) it will trigger a siren or buzzer.
I was looking at a 555 timer but not sure how to put it all together.
If someone would assist.
Yours
I have a reed switch i would like to add on my door that if its left open too long (variable time adjust) it will trigger a siren or buzzer.
I was looking at a 555 timer but not sure how to put it all together.
If someone would assist.
Yours