Re: home owner needs advice

[CalT <calT@xxxxxxxxxxxxxxx>]

"ABLE1" <nospamhere@xxxxxxxxxxx> wrote in
news:gBpot.41720$d9.15067@xxxxxxxxxxxxxxxxxxxxxxxxxxx:

>
> "CalT" <calT@xxxxxxxxxxxxxxx> wrote in message
> news:XnsA1CC62B833B83samnonenet@xxxxxxxxxxxxxxxxxx
>>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.
>>
>
> Well un-baffle yourself.
>
> The contacts are just "dry contacts"  aka   no voltage.  You can
> apply a voltage to the C(Common) Terminal and when tripped the
> voltage will be applied to the NO(Normally Open) terminal.  Or
> voltage will be removed from the NC(Normally Closed)
>
> Just be advised that the contacts are only rated at 1 amp @ 50vac
> and 24vdc. More than that you will need a slave relay to handle
> heavier loads.  Make sure you check the specs of the device you
> are connecting to before you become unhappy with yourself.  :-)
>
> Hope that helps.
>
> Les
>
>

That explanation I understand.  :o)

This is exactly what I needed to know.  I can not setup a relay
system for an alarm.

I might explain that I have to use something simple like the Optex
deal because my wife wants no part of zones or codes or anything
like it would take for a real alarm system. I have many Optex
receivers and two or three transmitters coded to each one of them.
The receivers are all plugged into power strips that are controlled
by a single wireless remote control power outlet.  All my wife has
to do is press the on/off button on the key pad to
activate/deactivate all the Optex Annunciators. It's Rube Goldberg
at his best, but it's better than no alarms at all. These things
never have false alarmed after setting the proper beam pattern.

Thanks again for answering ABLE1.