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12V vs 24V Fire Alarm #54701 08/04/05 11:22 PM
Joined: Jul 2004
Posts: 136
C
cgw Offline OP
Member
Can someone give me the practical difference(s) between 12V and 24V fire alarm systems?

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Re: 12V vs 24V Fire Alarm #54702 08/05/05 01:51 PM
Joined: Mar 2002
Posts: 582
R
Ron Offline
Member
I'm not aware of any major manufacturer of fire alarm systems that use 12V.


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Re: 12V vs 24V Fire Alarm #54703 08/05/05 06:34 PM
Joined: Jan 2005
Posts: 315
L
luckyshadow Offline
Member
I've never seen a 12 volt system. I have only dealt with two voltages on F/A.
Did repair work on an "old school" 120 volt system and install lots of 24 volt.

Re: 12V vs 24V Fire Alarm #54704 08/05/05 07:52 PM
Joined: Dec 2002
Posts: 228
J
JCooper Offline
Member
I don't think I have ever seen a true fire panel with 12vdc output, most of the time a 12vdc panel is a residential burg panel with a fire zone. It is a bit easier to get parts for a 24vdc system, there are very few companies that make a 12vdc horn/strobe, System Sensor is the only one that I can think of off the top of my head. It is also easier to get 24vdc smokes. Is this a residential or commercial installation?

Re: 12V vs 24V Fire Alarm #54705 08/05/05 08:07 PM
Joined: Jan 2003
Posts: 1,429
L
LK Offline
Member
24V system will allow a greater selection of devices, and also allow more devices on each zone.


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