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[chiefop]

Does anyone have information on an available carbon monoxide detector that will work with an X10 security system.  I would also like to combine that with smoke detector.

[vhoang]

If you can find one with a "dry contact closure" option, you can x10 enable it by connecting it to a powerflash module.   Just call up your local hardware store to see if they have sensor with the contact closure connection.   Most security based ones do.

rfxcom has one with their rf-x10 chip embedded but i haven't seen them sell in the US yet.   netherland group.

[steven r]

Unless your application is to monitor a remote location or as a supplemental alert, I would NEVER use X10 to let me know when it wasn't safe to breath. X10 is a great tool but I'd never rely on it for a life or death situation.
e.g. I'd have no problem if X10 flashed the lights but I'd want my CO detector screaming at 100⁺⁺ decibels first!

[Walt2]

If you can find one with a "dry contact closure" option, you can x10 enable it by connecting it to a powerflash module.

The wired-in smoke/fire and CO detectors, usually have a third wire.  This third wire is meant to trigger other detectors.  Basically, if one sounds, they all sound.

This third wire is 120v.  I guess one could use that, thru an low-voltage AC adapter, and into a powerflash too.

Of course, this way the detector will sound, and you can, in addition, have X10 do stuff too like flashing the outside lights for the fire dept can locate your house, and turn on the inside hallway lights so that you can more easily find your way out.