Improve reliability with the Emerson TREX-PMDC-1211 AMS Trex Device Communicator. Increase productivity in the field with your Trex unit by doing more types of tasks. Easily solve complex device issues without the need for other specialized tools. The Trex communicator is designed to withstand the harsh conditions in and around manufacturing facilities and is safety-rated, so it can go anywhere you can go. Rely on Trex to deliver results and keep your field assets reliable.