4-Port UHF RFID Reader Module
RLM-4P 4-Port UHF RFID Reader Module
Embed four controlled UHF RFID read points inside smart cabinets, kiosks, workstations, and OEM devices that need several antenna positions in one enclosure.
Built for device teams that need multi-point RFID coverage inside one machine or cabinet before pilot integration.
Why Use RLM-4P?
Why use RLM-4P for embedded multi-point RFID devices?
RLM-4P is designed for equipment that needs several controlled UHF RFID read points inside the product instead of multiple separate external readers.
Drive four controlled read points
Use four RF antenna ports for cabinet shelves, kiosk compartments, tooling stations, or multi-position item interaction points.
Fit compact embedded systems
The module layout, 15-pin FPC host connector, and SMA-K RF connectors support OEM device integration.
Separate nearby read zones
Use antenna planning, power control, and software logic to manage several RFID read areas in one device.
Support pilot development
Datasheet, SDK resources, host-side integration guidance, and antenna review are available for project evaluation.
Features
RLM-4P features for compact multi-antenna RFID integration
4 RF antenna ports
Supports four external antenna positions for cabinets, kiosks, workstations, and controlled process points.
15-pin FPC host connection
Provides compact embedded connection to the host controller or mainboard.
SMA-K RF connectors
Uses durable RF connectors for multi-antenna cable routing inside the equipment.
Adjustable RF output
RF output can be adjusted up to 33 dBm with 1 dB stepping for read-zone tuning.
Fast RFID reading
Supports >500 times/sec tag reading for host-side workflow integration.
Filter and RSSI support
Tag data filtering and RSSI information help software manage multiple read points.
Applications
Bring multi-point embedded RFID to cabinets, kiosks, and controlled equipment zones
RLM-4P is best suited for compact devices that need several defined RFID read areas without moving to a larger external fixed reader architecture.
Smart Kiosk Integration
Smart Kiosks & Pickup Stations
Use several controlled antenna points for compartment verification, issue / return workflows, and item confirmation.
Best for several small read zones
Smart Cabinet RFID
Smart Cabinets & Tool Management
Support multiple shelves, doors, or storage positions inside one cabinet controller.
Useful when one cabinet needs multiple read points
Multi-zone Integration
OEM Multi-zone Equipment
Add embedded RFID to automation stations and devices where several antenna positions must be coordinated.
Embedded RFID across several positionsDesign-in Guidance
RLM-4P design-in workflow
Use this workflow to plan antenna allocation, cable routing, host connection, and pilot validation before final device integration.
Define the four read areas and the tagged objects in each position.
Review antenna placement, isolation, cable path, and enclosure space.
Prepare power, host-side FPC connection, and device communication logic.
Apply filtering, RSSI logic, and event handling to separate read behavior.
Test reading reliability before production deployment.
Specifications
RLM-4P 4-Port UHF RFID Reader Module specifications
Review physical interface, RF protocol, frequency options, RF performance, data features, and environmental specifications before pilot integration.
| Physical & Interface | Product Model | RLM-4P |
|---|---|---|
| Product Type | 4-Port UHF RFID reader module | |
| Dimensions | 85.0 mm × 80.1 mm × 8.0 mm | |
| Antenna Ports | 4 antenna ports | |
| Host Connector | 15-pin FPC connector | |
| RF Performance | RF Protocols | ISO 18000-6C / 6B, EPC C1G2; GB/T 29768-2013 (optional); GJB 7377.1-2011 / 7377.1-2018A |
| Frequency Options | FCC (US) 902-928 MHz; ETSI (EU) 865.6-867.6 MHz; SRRC-MII (CN) 920-925 MHz | |
| RF Output | 33 dBm ± 1 dB (MAX) | |
| Sensitivity | -85 dBm | |
| Power Adjustment | 1 dB stepping | |
| Data & Features | Modulation | DSB-ASK, PR-ASK |
| Continuous EPC Read | 0-20 m (depending on configuration) | |
| Continuous EPC Write | 0-10 m (depending on configuration) | |
| Read Speed | >500 times/sec | |
| Additional Functions | Temperature / humidity protection support, DRM, simultaneous identification, tag data filter, RSSI | |
| Interfaces | Host Interface | 15-pin FPC connector |
| RF Port | SMA-K antenna connector | |
| Environmental Specs | Operating Temperature | -20°C to +70°C |
| Storage Temperature | -40°C to +85°C | |
| Humidity | 10-95% RH, non-condensing |
Support and Documentation
Product Datasheet
Review dimensions, interface details, RF output, protocol, and environmental information.
Request datasheet →SDK Package
Request project-matched SDK resources for module evaluation and application development.
Request SDK →Integration Notes
Get host-side interface and antenna planning notes for multi-port module integration.
Ask for notes →
Integration FAQ
Short answers about RLM-4P integration
Can RLM-4P be used inside a smart cabinet?
Yes. RLM-4P is suitable when several shelves or storage positions need controlled RFID read points under one embedded controller.
When should I choose RLM-4P instead of RLM-1P?
Choose RLM-4P when one read point is not enough and the device needs multiple antenna positions or separate internal zones.
What host interface does RLM-4P use?
RLM-4P uses a 15-pin FPC connector for host-side integration.
What RF connector does RLM-4P use?
RLM-4P uses SMA-K antenna connectors for the RF ports.
Can Raylink help review antenna placement?
Yes. Antenna placement, cable routing, and zone separation are important for multi-port embedded RFID performance.
Is RLM-4P suitable for OEM devices?
Yes. It is designed for OEM devices, smart cabinets, kiosks, and embedded equipment needing four antenna points.
Integration Review
Validate RLM-4P before device design-in
Share your cabinet or device layout, antenna positions, tagged item, host connection plan, expected read distance, operating region, and SDK needs.