Hi,
Wanting to have the ability to remotely disarm my security system, and knowing (or at least having read that this is impossible with macros), I happily came across this posting that described a hardware hack:
http://forums.x10.com/index.php?topic=16314.0 by BaBaLou
So, using the PUM01, connected to the disarm switch of a KR10A (the hack), I can now disarm the alarm remotely. Problem is, if the PUM01 code happens to be triggered by something else (random RF, etc), it would disarm my alarm. So I came up with this idea...
Plug a LM465 into the wall (because I had a spare) - on one house code. Then, plug the PUM01 (on a different house code) into the LM465. The PUM01 is hardwired to a KR10A's disarm switch.
Now, in theory, the PUM01 isn't powered until the LM465 is turned on, then a code can be sent to the PUM01 to DISARM the alarm. Not complicated, adds a lot of extra protection, but - DOESN'T WORK
The LM465 works great on its own. The PUM01 works great on its own. Plug one into the other and not even RF signals trigger the PUM01 after the LM465 is powered on. I'm thinking that the LM465 filters the X10 signals from being passed through to the PUM01, but that shouldn't affect the RF signals... So I'm confused.
I have a solution. I'm going to connect a relay to the LM465 that is going to feed an unfiltered AC line to the PUM01 (controlled by the relay). That way, the power going to the PUM01 will not have passed through the LM465. Not sure this is going to work, but I'm going to try - unless.....
Someone here has a solution to make the LM465 to PUM01 direct connection pass through work.
Thank you so much for your help.
Bruno