I am installing one of your optical kill switches on a new airplane I have under construction... I removed the Optical Kill switch from another airplane I have and it was working fine on that airframe... When I install / configure the kill switch on the new airframe, I don't get a green led on the transmitter module of the kill switch when I power on the electronics... Both airplanes use JR PCM receivers...

Is the kill switch transmitter toast??? Am I missing something???