Yes, the LED blinks when an x10 signal is sent.
As I continue to look for solutions, just the other day I had the sprinkler controller working with both wireless and wired x10 controllers. I had hoped that the Activehome software which drives my CM11A ActiveHome computer interface would work overnight and control the zones according to my timed schedule. By the next morning however, the scheduled events did not occur and none of the zones on the sprinkler controller would respond to x10 commands from either a wired or wireless controller. Again, the IRRMaster Pro will turn on and off the zones using the radio buttons on the face of the device.
Unless the problem lies with the IRRMaster, I think its time to start unplugging everything in the house until I find a source of possible noise. Is there an easier way to find the source of the noise?
Thanks.
Bob