An IBM compatible, or Apple Macintosh computer, can be connected directly to this port. These commands, listed in the Appendix, include commands for uploading and downloading databases. Plus database is approximately 65.536kb, uncompressed. Downloading databases directly to the PC eliminates the need for Memory Card. Plus to your computer's serial port, modem, or serial device.
Adapters are available from many electronics stores.
The Appendix includes detailed diagrams, pin-outs, and instructions for a variety of applications. The M100c Plus allows an external modem to be connected directly to the data input for easy remote operation. The modem connects a remote user to the receiver's serial port. The M100c Plus does not provide for an initialization string for the modem. In theory, any modem that can be configured with the following parameters and initialize itself from stored settings should work.