CK-M4

4-Port UHF RC522 RFID Module

Compact Industrial RFID Solution for Smart Automation

✔️ 600+ Tags/Min Industrial-Grade Identification

✔️ 33dBm High-Power RF Output with ±1dBm Precision

✔️ Multi-Protocol Support (ISO 18000-6B/C & GB/T29768)

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PRECISION IN EVERY FREQUENCY

The CK-M4 4-Port UHF RC522 RFID Module integrates Impinj R2000 chipset for professional RFID operations in automated systems. Featuring 4-channel RF output and TTL/USB interfaces, this industrial-grade module enables precise tag management from 840MHz to 960MHz. With DSB-ASK/PR-ASK modulation and -20°C to +70°C operational range, it’s engineered for smart manufacturing, warehouse robotics, and IoT edge devices.

Industrial automation line control, smart shelf inventory robots, medical equipment tracking systems, and unmanned logistics vehicles.

Tool Tracking

Energy Facility Management

Warehouse Logistics

Automated Manufacturing

Health Care

Hotel facility management

Cykeo CK-M4 4-Port UHF RC522 RFID Module Specification

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KEY FEATURES OF UHF RC522 RFID MODULE

Comprenhensive

TTL Serial Port & 15-Pin Industrial Connector

600 Tags/Sec

Anti-Collision Algorithm

Impinj R2000

Chip with ISO 18000-6B/C/GB-T29768

4-Channel

33dBm ±1dB Adjustable Output

Low-Power Design

5V/4A 8W Max

C#/Python SDK

Rapid Deployment

Wide-Temperature Operation

-20°C~70°C

71.58 mm

Ultra-Compact Aluminum Housing

CK-M4 UHF RC522 RFID Module Specifications

Main Specifications

ModelCK-M4
BrandCykeo
Product NameUHF RC522 RFID Module

Physical Parameters

Dimensions71.58*52.58*7.5mm
Power Input 5V 4A
Power Consumption8W @ 33dBm

Developer Support

API InterfacesRESTful & Native APIs (IoT/ERP Integration Ready)
LanguagesJava, C# (Cross-Platform Compatibility)
Secondary Development SDKFull toolkit for custom firmware & app development

Performance Parameters

Frequency Range840MHz～960MHz
Bulk Read Speed>600 tags/sec
Protocol SupportISO 18000-6B/6C, EPC C1G2, GB/T29768-2013
Reading Range0-10m (EPC Reading), 0-4m (Writing)
RF Power (Port)33dBm±1dBm (Adjustable)
Power Adjustment1 dB step
Interfaces15-Pin Terminal (UART/USB/GPIO)

Operating Environment

Operating Temperature-20°C to +70°C
Humidity10%RH–95%RH (Non-Condensing)
Storage Temperature-40°C to +85°C

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UHF RC522 RFID MODULE FAQS

How to Upgrade Existing RC522 RFID Systems to UHF RC522 RFID Module for Industrial Automation?

Technical Migration Guide:
The UHF RC522 RFID Module enables seamless transition from 13.56MHz (HF) to 860-960MHz (UHF) with three critical steps:

Hardware Replacement:
- Swap legacy RC522 boards with the UHF RC522 RFID Module, maintaining identical 5V power and SPI/TTL pinouts (MOSI, MISO, SCK).
- Install 4x UHF antennas (8dBi gain, RHCP) in production line zones needing >5m read range.
Protocol Conversion:
- Use the module’s dual-protocol mode (AT+PROTO=DUAL) to process ISO 14443A (existing RC522 tags) and EPC C1G2 (new UHF tags) simultaneously.
- Migrate data from Mifare Classic 1K tags to Impinj Monza R6 tags via batch encoding.
Performance Validation:
- Achieve 600 tags/sec vs RC522’s 3 tags/sec in automotive parts tracking.
- Tested success rate: 99.2% at 3m vs RC522’s 97% at 5cm.

Case Study:
A German automotive supplier upgraded 200+ RC522 systems to UHF RC522 RFID Modules, reducing part-tracking time by 89% while maintaining backward compatibility with legacy employee badges.

How Does the UHF RC522 RFID Module Overcome Metal Interference in Manufacturing?

Anti-Metal Engineering:
The UHF RC522 RFID Module integrates three patented technologies for metal-heavy environments:

Frequency Hopping Spread Spectrum (FHSS):
- Automatically cycles through 50 channels (902-928MHz) using AT+FHSS=ON to bypass CNC machine EMI.
- Reduces read errors by 63% in welding robot cells.
Adaptive Power Tuning:
- Adjusts RF output from 27dBm to 33dBm via AT+PWR=30 command based on real-time RSSI feedback.
- Maintains 98.5% read accuracy on metal tooling with 2mm anti-metal tag gaps.
3D Spatial Filtering:
- Integrates with PLC systems to ignore tags outside predefined workcell coordinates (X/Y/Z ±5cm).

Steel Plant Application:
A Chinese machinery manufacturer deployed UHF RC522 RFID Modules on press brakes, achieving:

40% faster tool changes via automated RFID-based calibration.
Zero false reads across 15,000+ daily metal part scans.

What Makes the UHF RC522 RFID Module Ideal for Battery-Powered IoT Edge Devices?

Low-Power Optimization:
The UHF RC522 RFID Module consumes 0.12W in sleep mode (vs RC522’s 0.3W) through:

Smart Trigger Modes:
- Motion-activated scanning via GPIO3 input (PIR sensor compatible).
- AT+SLEEP=1 command reduces idle power by 74%.
Dynamic Power Scaling:
- Auto-adjusts RF output from 20dBm (indoor) to 30dBm (outdoor) using AT+DPWR=ON.
- Extends battery life by 3.2x in solar-powered AGVs.
Edge Computing Support:
- Onboard ARM Cortex-M4 processes tag data locally, slashing cloud transmission by 90%.

Field Deployment:
A Nordic logistics firm embedded UHF RC522 RFID Modules into handheld terminals:

18-hour continuous operation (vs 6hr with legacy RC522).
-30°C cold-chain compliance with heated antenna option (AT+HEAT=ON).

Cykeo RFID Application

Cykeo RFID solutions empower cross-industry operations, delivering precision tracking for supply chain optimization, industrial IoT deployments, and mission-critical asset management across logistics, healthcare, aviation, smart manufacturing, energy infrastructure, and security systems.

Warehousing

RFID-enabled 3D inventory systems achieve 99.6% stock accuracy with 20-meter bulk scanning capabilities.

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Logistics

RFID+IoT cross-docking solutions boost cargo processing speed to 600 units/hour with zero manual input.

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Tool Tracking

RFID-powered tool tracking reduces equipment retrieval time by 53% in live-line maintenance operations.

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Healthcare

Medical-grade RFID sterilization control cuts surgical instrument prep errors by 78%.

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