Thanks for the reply Jeff. Can the high-energy transients couple back with the controller plug in? When the lights are turned off it stops, and a the controller functions normally. Actually the controller works while the noise is going on. The noise does not make the led as bright as the commands do.
The fact that the LED is dim really points to a transient. I have never seen anything couple back with a transmitter load on it. The AC receptacle is fed through a low-pass filter. It is technically feasible for a very high energy transient to leak enough signal back through that low-pass filter to turn the transmitter on briefly for each half cycle.
The energy in a transient depends on the line inductance, and where in the 60Hz waveform that power is switched. Switching near zero crossings produce little or no transient. Switching further up the waveform can produce a stronger transient. Switching near the peak, as would be the case when lights are dimmed, can produce significant transients if there is enough line inductance. The fact that these are floodlights may mean there are long runs and some significant inductance.
I do not recall anyone reporting anything like this before. I would like to confirm the unit is functioning as it should. Even if you assembled it as a kit, I would give it a full electrical test and return it at no charge. If I assembled it myself, I will even reimburse you for shipping. Perhaps it would be best to contact me directly to arrange its return.
Jeff
