... 5ch,6ch,7ch,8ch,9ch,10ch,11ch and 12ch wireless remote control switch,AC90v~AC240v or DC12v voltage working circumstanceOur ... 500m,1000m,2000mWe can design/produce 3 different functional wireless remote control systemindividually or design all the 3 functions together. ... and negative wireless control 3):Commutative lock model:[For example 4ch wireless switch]Press remote button A,the receiver relay A ...