The Emerson AMS TREX Communicator is the industry’s most advanced handheld communicator for commissioning, troubleshooting, and maintaining field devices. It features a large, full-color display, a powerful processor, and a suite of built-in tools that make it easy to get the job done quickly and efficiently. The TREX Communicator is also the only handheld communicator that is certified for use in hazardous areas, making it the ideal choice for use in oil and gas, chemical, and other industrial applications.