ERC 5 pin DIN connector. ERC-M uses 15 pin connector on the board supplied with ERC-M > multi-wire cable > 5, 6, or 8 pin DIN connector depending on rotator when a Rotorcard is not needed. Use for Emotator 747SRX, 750FXX, 1200/1800 FFX/FMX, 1300 MSAX.