these are 4 channel IR/RF | Electronics › Electronics › Use of HT12D and HT12E › these are 4 channel IR/RF November 2, 2011 at 1:48 pm #6786 QaisarParticipant these are 4 channel IR/RF tranciver ic’s. u can use it to build 4 channel IR/RF remote control. but this pair of ic’s is expensive .
