ERC provides interfaces for more than 90 different rotators. Choose the right interface for your application with this guide. More information is shown on each individual product page.
For control of a single azimuth rotator:
ERC Version 4 USB is a universal interface with relay outputs. It is a PC board that installs inside the rotator control box.
ERC Version 4 RS232 is a universal interface with relay outputs, identical in function to the Version 4 USB version except using RS232 control instead of USB. The RS232 version is only sold as a kit.
ERC-Mini DX and ERC-Mini SDX is designed for a single azimuth rotator with a remote output connector.
ERC-M is for controlling two (2) rotators, either a single AZ/EL rotator like the Yaesu G5400/5500/5600 series or a pair of azimuth rotators (example: 2 stacked yagis on 2 separate rotators).