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Small green rectangular PCB module with integrated antenna and pin headers

SMUGDESK

SMUGDESK RFID Reader Module 3.35V UART RDM6300

SKU CH-MD41-VSQ90

This RFID reader module reads contactless IC cards and key fobs at 3.35 V over a UART serial link using the RDM6300 data format

  • Wide 3.3 V to 5 V supply works with Arduino and STM32 boards
  • UART TTL output uses RDM6300 compatible format for direct serial reading
  • Integrated built-in antenna removes external wiring and saves board space
  • High-sensitivity reading identifies standard IC key fobs and contactless cards
  • Low-power design supports continuous operation in access control and DIY projects

RFID reader for Arduino and MCU projects

This SMUGDESK module reads contactless IC cards and key fobs using a built-in antenna. It operates on a wide 3.3V to 5V DC supply, matching common Arduino, STM32 and other single-chip controllers. The UART serial output delivers RDM6300-compatible card ID data for direct microcontroller integration. Designed for low-power continuous operation in access control and DIY embedded applications.

Built-in antenna and UART output simplify wiring

The integrated antenna removes the need for external antenna wiring, saving space in compact devices. UART TTL serial communication provides RDM6300-compatible data format without complex algorithm processing. No extra configuration is required beyond standard serial connection. This read-only module cannot write data to IC cards, so verify your mainboard supports the required read function.

Handles standard IC cards and key fobs

High-sensitivity reading reliably identifies common contactless IC cards and key fobs for access control and swipe detection. Low-power design supports long-term continuous operation in embedded projects. Limited to read-only operation with RDM6300 data format; it does not support writing or other card protocols. Confirm voltage compatibility and serial-port availability on your target hardware before deployment.

How it compares

Measured against everything we stock in RFID & Smart Card Readers, at today’s prices. Recalculated every night.

Price $11.99
Cheaper than about 92% of the 294 comparable items (median $21.99).

Specifications

No published specifications for this item yet.

Questions about this item

Will the built-in antenna need replacement after extended use?

The module uses an integrated antenna with no external wiring, so there is no separate antenna part to service or replace.

What limits continuous reading of IC cards over long periods?

The reader draws low power from a 3.3V5V supply and is designed for long-term continuous operation without thermal throttling.

How much heat or noise does the module produce when running all day?

The low-power design and lack of moving parts mean it generates minimal heat and operates silently during sustained use.

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