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Re:Smoke Alarm
--- In ukha_d@xxxxxxx, Kevin Hawkins <lists@...> wrote:
>
> If you do add opto isolation or relays then the 10 year battery life
may
> well be compromised. It really depands how much current might be
drawn
> by anything attached to the link wires whilst the sensors were in the
> non alarm conditon. Best would be to have some very high impedence
> voltage sensing input into any HA stuff.
Thanks, that's something I had not thought of. All the Idratek inputs
are "volt-free", how might I provide a high inpedance input to a
volt-
free input?
Jon
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