SEUIC (Dongji) / Fixed RFID readers
U400 RFID: Fixed RFID readers
SEUIC (Dongji) U400 RFID is a desktop UHF RFID reader for controlled workstation, checkout, inventory and traceability points. The official page lists adjustable output, regional frequency options, Ethernet, RS232, USB, MQTT and isolated GPIO in a compact desktop enclosure.
Suggested profiles: desktop inventory, checkout, traceability and controlled workstation RFID
- RFID protocols
- EPC Global C1 Gen2 / ISO18000-6C
- Power
- 12 VDC / 2 A input; 24 W maximum power is listed
- Frequency
- 860-960 MHz with regional profiles such as 920-925 MHz, 902-928 MHz and 865-868 MHz listed
- RF output
- 0-33 dBm adjustable, with +/-1 dBm reference
- Host protocols
- RS232, HID, TCP, HTTP, HTTPS and MQTT
- Interfaces
- RJ45, RS232, USB and four-input/four-output GPIO
The exact model, regional configuration and commercial terms require project confirmation.
Browse by device capability
U400 RFID / Browse by device capability
UROVO is the primary established product resource, with SEUIC (Dongji) and selected platforms used where the capture method, form factor or deployment requirement needs another option. Published models follow an evidence, regional-configuration and RuggedLayer validation path.
Suggested profiles
- Desktop item identification and inventory
- Checkout or dispatch workstations
- Traceability points with a defined short-range read zone
Browse by device capability
- A desktop reader format keeps the RFID read zone close to the workstation or checkout surface.
- Ethernet, serial, USB, MQTT and isolated GPIO provide clear integration choices for host systems.
- Regional frequency profiles and adjustable output make RF planning part of the deployment decision.
- Read accuracy, tag density and stray-read control require testing with the actual fixture and materials.
How a device enters the portfolio
Key specifications
Manufacturer-listed configuration; confirm the exact variant before ordering.
Platform
| Host protocols | RS232, HID, TCP, HTTP, HTTPS and MQTT |
|---|
Data capture
| RFID protocols | EPC Global C1 Gen2 / ISO18000-6C |
|---|
Power and physical
| Interfaces | RJ45, RS232, USB and four-input/four-output GPIO |
|---|---|
| Power | 12 VDC / 2 A input; 24 W maximum power is listed |
Environmental
| Environment | Operating -20 to +60 C; storage -40 to +85 C; 5-95% RH non-condensing |
|---|
Other configuration
| Frequency | 860-960 MHz with regional profiles such as 920-925 MHz, 902-928 MHz and 865-868 MHz listed |
|---|---|
| RF output | 0-33 dBm adjustable, with +/-1 dBm reference |
| Status | Power and connection indicators, buzzer and IP reset button |
| Physical | 400 x 300 x 35 mm; approximately 2.5 kg |
| RF mode | Wide-spectrum frequency hopping or fixed-frequency transmission |
A final shortlist depends on the application, scan or RFID workload, operating environment, country, deployment volume and support expectations.
A clear handoff at every layer
Five service layers for a more predictable device program.
RuggedLayer organizes access to multiple manufacturers into a consistent engagement model. Each layer has a defined input, deliverable and evidence boundary.
Service layers
- Define the read boundary, tag placement, shielding, operator action and host event contract before installation.
- Confirm the permitted regional frequency, output, protocol, GPIO voltage, power and network segmentation.
- Pilot representative tags and fixtures to control missed, duplicate and stray reads at the workstation.
Deployment accessories
- Scope the 12 V power supply, Ethernet or serial cable, mounting or desk fixture and GPIO wiring.
- Keep the RF profile, tag settings, host protocol, event retry behavior and station drawing with the handover.
RuggedLayer Test Lab
Define a useful test, not a vague benchmark.
Tell us the labels, tags, application and operating conditions that matter.
- 01
Measure read and write behavior at the intended boundary with target tags, density, materials and orientation.
- 02
Test TCP, MQTT, serial or HID integration, GPIO triggers, duplicate suppression and power or network recovery.
- 03
Freeze the frequency, output, host protocol, fixture, firmware and acceptance thresholds before rollout.
Project intake
U400 RFID / Start with enough context to make the next step useful.
Choose the closest project intent and describe only non-confidential workflow, application and deployment requirements.