The PDA1485 converts the serial output of the ProVu meter to balanced, full or half-duplex RS-485 signals.

The PDA1485 has a removable screw terminal connector for the RS-485 terminals which includes Transmit Data - DO and /DO, Receive Data - DI and /DI, and Signal Ground.

The adapter is provided by the ProVu meter M-Link connection.

The PDA1485 has three diagnostic LEDs: a Power; P LED to show when the adapter is powered properly, a Transmit Data - TX LED to show when the adapter is sending data out from the PC side, and a Receive Data - RX LED to show when the adapter is receiving data from the ProVu meter.