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CK-M4 4-Port RFID Module(images 1)

4-Port RC522 RFID Module

✔️ Adjustable RF output: 33 dBm ±1 dBm


✔️ Reads over 600 tags per minute in dense setups


✔️ Works with ISO 18000-6C, EPC C1G2, ISO18000-6B, and GB/T29768-2013

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CK-M4 4-Port RFID Module(images 2)
CK-M4 4-Port RFID Module(images 3)
CK-M4 4-Port RFID Module(images 4)
CK-M4 4-Port RFID Module(images 5)
CK-M4 4-Port RFID Module(images 6)
CK-M4 4-Port RFID Module(images 7)
CK-M4 4-Port RFID Module(images 8)

module rfid rc522 It handles four ports independently, covers 840–960 MHz, and supports DSB-ASK/PR-ASK modulation. In warehouses, it keeps reading rates high even when tags are close together or near metal racks. Field experience shows AGVs and handheld devices maintain >95% read accuracy without extra tuning.

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CK-M4 UHF RC522 RFID Module Specifications

  • ModelCK-M4
  • BrandCykeo
  • Product NameUHF RC522 RFID Module
  • Dimensions71.58*52.58*7.5mm
  • Power Input 5V 4A
  • Power Consumption8W @ 33dBm
  • API InterfacesRESTful & Native APIs (IoT/ERP Integration Ready)
  • ​LanguagesJava, C# (Cross-Platform Compatibility)
  • ​Secondary Development SDKFull toolkit for ​custom firmware & app development
  • 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 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 from older HF RC522 systems?

Swap out the 13.56 MHz HF module for the CK-M4, keep the same power and TTL/USB connections, and add UHF RFID antennas. This allows mixed tag environments. On-site testing: inventory scanning went from a few tags per second to hundreds, cutting labor hours dramatically.

How does it cope with metal and interference?

CK-M4 uses frequency hopping, signal filtering, and adjustable power. Metal racks, machines, or tools near welding stations no longer affect reads. In factories, repeated scans of metallic pallets consistently hit 98–99% tag capture.

Can it work on battery-powered or mobile devices?

Yes. Deep sleep and event-triggered scanning save power. Dynamic power adjustment reduces unnecessary energy use. Solar-powered AGVs or RFID handheld readers in cold storage ran for hours without missing a single tag.

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Warehousing
Logistics
Tool Tracking
Healthcare
Manufacturing
Energy
Security