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450 Thiết bị giao tiếp, hiệu chuẩn Hart Emerson TREXCHPNAWS1 AMS Trex Communicator
| TREX | Base Trex Platform (1) |
| Code | Communication Module |
| C | Device Communicator communication module |
| L | Device Communicator Plus communication module(2) |
| Code | Applications |
| H | HART Application |
| F | HART + Foundation Fieldbus Applications(3) |
| Code | Power Module Type |
| P | Rechargeable Li-Ion Power Module |
| Code | Product Certifications |
| KL | ATEX, CSA (US/Canada) and IECEx Intrinsically Safe (includes FISCO as applicable) |
| NA | No Approval |
| Code | Radio Options |
| W | Wireless(4) |
| 9 | None |
| Code | Support(5) |
| S1 | Standard Support (1 Year)(6) |
| S3 | Standard Support (3 Year)(6) |
| P1 | Premium Support (1 Year)(7) |
| P3 | Premium Support (3 Year)(8) |
