Product Overview
The Honeywell TREXCFPKLWP3 is an AMS Trex Device Communicator, manufactured by Emerson. This handheld communicator is engineered for field technicians who need reliable, portable access to smart field devices. It combines a rugged platform with advanced communication capabilities, making it an essential tool for plant maintenance and commissioning.

Technical Specifications Breakdown
Key parameters for the TREXCFPKLWP3 are listed below for quick reference:
| Feature | Specification |
|---|---|
| Part Number | TREXCFPKLWP3 |
| Model | AMS Trex Device Communicator |
| Manufacturer | Emerson |
| Condition | New & Original in Factory Packing |
| Factory Warranty | 12 Months |
The device includes an AC adapter, USB cable, lead set with connectors, hand strap, quick start guide, and resource DVD. It also includes Bluetooth, WiFi, and NFC radios, available only in countries where spectrum approval has been obtained.
Industry Applications
Common applications include:
- Process Manufacturing: Configure and troubleshoot transmitters, valves, and analyzers in chemical or refining plants.
- Utilities: Commission and maintain field instruments in power generation or water treatment facilities.
- Maintenance Operations: Use the communicator for routine device health checks, calibration verification, and loop diagnostics.
With the optional ValveLink Mobile application, technicians can access valve diagnostics directly from the Trex unit, improving efficiency and reducing downtime.

Installation & Setup Guidance
Before using the TREXCFPKLWP3, ensure the power module is fully charged. Connect the lead set to the device and then to the field instrument. For Foundation Fieldbus applications, use the included Foundation Fieldbus Power Plug when ordered with the Device Communicator Plus communication module (L). The device supports wireless connectivity, so ensure the Bluetooth, WiFi, or NFC radios are enabled as per local regulations.
Maintenance & Reliability
Regularly inspect the device for physical damage and keep the connectors clean. Store the unit in a dry, protective case when not in use. The rechargeable Li-Ion power module should be charged periodically to maintain battery health. For long-term reliability, follow Emerson's recommended maintenance guidelines.
Compatibility & Integration
The TREXCFPKLWP3 is configured with the C communication module, which supports HART and Foundation Fieldbus applications. It includes Bluetooth, WiFi, and NFC radios for wireless integration. The device is certified as intrinsically safe (ATEX, CSA, IECEx), including FISCO as applicable, making it suitable for hazardous areas.
Selection Guide & Purchasing Advice
When selecting a device communicator, consider the protocols you need, the environment, and the level of support. The TREXCFPKLWP3 includes Premium Support (3 Year) and a 12-month factory warranty. For a reliable, new and original unit, contact AutoDCSTech to verify availability and lifecycle status.
Troubleshooting & Common Issues
If the device fails to communicate with a field instrument, check the lead set connections and ensure the instrument is powered. For wireless issues, verify that the radios are enabled and within range. If the device does not power on, recharge the Li-Ion battery. For persistent problems, consult the Emerson Trex resource DVD or contact AutoDCSTech for technical guidance.
Availability & Condition at AutoDCSTech
| Part Number | TREXCFPKLWP3 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
