As I understand the DS7000, it only
sends "all lights on" codes when
activated. This will not control an
Applicance module (only Lamp modules are
effected). But I did the same thing.
Installed an outlet near the peak of my
garage (inside). Puchased an "outdoor
rated" RadioShack power horn (12 volt), and
powered it from a 12-volt transformer
plugged into a lamp module. The alarm
toggles on & off with the lights, and then
stays on at the end of the cycle (just like
the house lights do.
I know X10 says that Lamp modules should be
used for incandescent lights only, but it
worked just fine for me.