Re: 2 wire vs 4 wire Smoke allarms

["John J" <nobody@xxxxxxxxxxx>]

<robertlbass@xxxxxxxxxxx> wrote in message
news:1155618779.110074.281690@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

> Most of the relays (for example, the one that Kidde sells) specifically
> state in the manufacturers' instructions that they are not for use with
> an alarm control panel.  Code requires that devices connected to a fire
> alarm system be "listed for the purpose" by the manufacturer.  Since
> such devices are almost invariably not so listed, using them with an
> alarm control panel is not code compliant.

I believe that at least one vendor (BRK) sells AC smokes with a UL listed
relay for interconnection to a security panel.