Re: home owner needs advice

[CalT <calT@xxxxxxxxxxxxxxx>]

CalT <calT@xxxxxxxxxxxxxxx> wrote in
news:XnsA1CC62B833B83samnonenet@xxxxxxxxxxxxxxx:

> I have some Optex Annunciators protecting my rear laundry room
> entrances.
>
> http://www.optexamerica.com/security-products/rctd-20u
>
> I need a siren to be tripped by this to scare any burglar or
> whomever away before they continue on into my home.  In the Optex
> manual it says:
>
> "Terminal Connection:  Any device with a zero voltage input
> terminal can be connected to this terminal.  This may include
> electronic locks, emergency sounding devices, and automatic
> reporting equipment."
>
> I do not understand the term "zero voltage input terminal".
>
> When the Optex triggers on movement it senses and the NO terminals
> close, how can they activate any relay or whatever if the
> terminals cannot have a voltage applied or current running through
> them?
>
> Somewhere I am not understanding something here.  I am used to
> hooking up relays in my screwing around over the years, but this
> has me baffled.
>

I guess I should have added that we cannot put up any motion dectectors
outside to sound an alarm because we live in a rural area and there are
too many critters walking around day and night.