home owner needs advice
I have some Optex Annunciators protecting my rear laundry room entrances.
http://www. "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.
read more and respond »Posted 5 years ago by CalT in CCTV, Alarms and other Physical Security
