I bought an X10 alarm system and still can't get all the alarms to trip. I
tried various troubleshooting methods and devices with no luck. I would go
with RF devices. I wish I could return the whole system.
[Followup set to sci.electronics.misc]
X10 (and any powerline system) has to deal with sites that are served by
multiple phases. The alarms that aren't tripping may be on a different
phase than the host box.
Here's a bare bones RF X-10 setup - everything you
need for $25.99. See the url
It contains a keyfob transmitter and a receiver -
the receiver plugs in to a receptacle. It (the receiver)
contains a relay controlled 2 prong receptacle into which
you can plug an incandescant light up to 500 watts,
or a resistive load up to 15 amps.
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