Introduction - If you have any usage issues, please Google them yourself
Work Descr iption: 51 single-chip microcomputer-based signal transmitter, theoretical distance is 3000 meters, the actual interference by the reality, the signal sent down to shorten the distance to 1,500 meters. Can be equipped with multiple receivers, the realization of multi-machine communication. Work role: For example, manually enter the A, B, C, D 80 different signals, start to send, then equipped with a number of receivers that can receive signals 80.