Re: I need a doorbell!!!

[Pete Shew <pslists@xxxxxxxxx>]

I am thinking of a PIR with the delay capacitor replaced with a much
smaller one to give quick response. If the bell push is pressed then
delay the trigger for e.g. half a second (empirically determined by real
tossers) before checking PIR for person still there before ringing the
phones.

Pete

David Gumbrell wrote:
> Door switch wired into back of Idratek light switch module then
forwarded to
> relay to ring bell and sound bell noise on other panels. But real
motivation
> is to have a height sensor based on door CCTV to not ring the bell
when it's
> the annoying little f**kers who ring and run. And to take a picture of
them
> for the Name & Shame posters.
>
> Cheers,
>
> David
>
>