... home electric appliances control use This is 1 channel wireless transmitter Technical specification: Battery: 27A 12V Channel: 1CHWe can design/produce ... 1ch,2ch,3ch,4ch,5ch,6ch,7ch,8ch,9ch,10ch,11ch,12ch,13ch,14ch and 15ch wireless remote control ... :When Jumper is OFFpossition, when press button A on the transmitter, receiver channel A goes on 2 secondsthen goes off automaticaly ...