... and produce 1-way to 15-way wireless remote switch.I .UseWe can produce 3 different functional wireless remote system, individually ... ,the third is interlock model.1) self lock model eg.KL-402Press remote button A first time, the receiver relay is ... ,DC:12v2) optional frequency315MHz OR 433MHz3) coding wayfix code (eg. KL-402),learn code and fix code(eg ...