rkrieger
Member
Anyone had experience with this????
Thanks,
RLK :smile:
rkrieger said:Without actually checking the "signal" voltage of a typical residential 3 wire smoke detector, I am wondering if anyone knows whether the signal circuit puts out a DC or AC signal, what voltage range and IF it would be strong enough to operate a simple contactor to send a "fire" signal to an alarm panel. I know that alarm guys often install their own detectors in a house during rough-in, but why not have both?? Our MRC code in Michigan requires a "looped" detector in every bedroom and every hall besides one in the basement, or at each living elevation. So, why not use the availability of the existing detectors to "trigger" a 12 volt alarm panel where a typical fire loop is N.O. The contactor would send a latched signal to the panel and thus the dialer would call out.
Anyone had experience with this????
Thanks,
RLK :smile:
Firegeek said:The 120VAC single-station smoke detector is not listed for use with a 'panel'. Also, each panel has a list of 'compatable detectors (and other devices). You will never see a 120 VAC detector listed on a compatability document from a panel.
In other words, it is never acceptable to do what you suggest.
The monitored low voltage device CAN be a substitute for the single-station (120VAC) device. The opposite is not an option.
Firegeek said:I understand the complaint that 'alarm guys' charge a lot for seemingly little work.