RF module - KEYMARK
see in .pdf manual:
The TXC1 is an ASK transmitter module .The result is
excellent performance in a simple-to-use .The TXC1 is
designed specifically for remote-control , wireless mouse
and car alarmsystemoperating at 315/433.92 Mhz in
the USAunder FCC Part 15 regulation. its is possible to work in PBP commands:
sorry my english...