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USB serial converter for MOTOTRBO

The DMP921 opens the way to many telemetry applications with various modules of phoenix contact.


The DMP921 interface converts the USB interface of MOTOTRBO radios to a Phoenix compatible interface. This enables users to operate Phoenix telemetry applications via a DMR network. Measured values can just as well be transmitted as telecontrol commands.

In addition, the DMP921 can perform the necessary activations at the USB interface to control the radio. Simple commands entered via the serial interface enable you to use the mobile radio with many applications.

Additional Resources

Supported Languages

• Channel and zone switch.

• Typing texts into the display.

• Activate / deactivate scanner functions.

• Adjust transmitting capacity.

• Activate the radio call system.

• Control remote radios.

• Send text messages.

• UDP data communication between radio device and computer.

• UDP data communication between two radio devices.

• UDP broadcast data communication.

• Transparent mode for data communication.

• Adjustable interface parameters.

Radio Hardware / Releases Compatibility
MOTOTRBO series radios.

IP Technology
OPC Server (eg. SCADA).

USB interface to connect DMR radio device (DM3xxx and DM4xxx).
RS485 to expansion Phoenix Contact Module.
DMP921 ADK Software.

MOTOTRBO System Architecture
Single Site, IP Site Connect, Capacity Plus, Linked Capacity Plus.

Other Requirements
Optimal use with:
RAD-IN-8D          max. 30 mA.
RAD-OUT-8D      max. 160 mA .
CAUTION: do not connect more than 6 of these modules.
RAD-IN-4A:         max. 130 mA.
RAD-OUT-4A:     max. 130 mA.