This relay box was made years ago as a way to autoguide my first mounts - CG-5, EQ-6 and later EM-100 and finally EM-200. Has RS232 input, accepts SBIG and Starlight Express STAR-2000 protocols, has true relay outputs and 5 status LEDs. output is SBIG "wide" DB-15 with all relay contacts individually accessible. Power has to be provided separately.