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Small green circuit board with built-in antenna and pin headers

SMUGDESK

SMUGDESK RFID IC Card Reader 3.35V UART RDM6300

SKU CH-H6ZS-VWY3P

Compact RFID module reads IC cards and key fobs via UART with a built-in antenna on 3.3 V to 5 V power

  • Works with 3.3 V and 3.35 V boards
  • UART output simplifies Arduino and STM32 coding
  • Built-in antenna removes external wiring
  • RDM6300 protocol reads IC cards and key fobs
  • Compact module fits DIY access-control projects

Compact RFID Reader Module

The SMUGDESK RFID IC Card Reader is a wireless identification module with a built-in antenna and UART TTL serial output. It operates on a wide 3.3V to 5V DC supply compatible with common microcontrollers and embedded boards. The unit follows the RDM6300 output protocol for straightforward card ID retrieval. No external antenna is required, simplifying hardware integration for access control and DIY projects.

Suitable for DIY Access Control Builders

This module suits developers and hobbyists creating access control systems, card identification tools, or embedded experiments with Arduino or STM32 platforms. It reads standard IC cards and keyfob tags within its effective sensing range. Buyers who need to write or encrypt card data should look elsewhere, as the device is read-only. Projects requiring a different communication interface or higher-level protocol support will need an alternative solution.

Read-Only IC Card ID Function

The single specification that decides fit is the read-only IC card ID capability using the RDM6300 protocol. The module outputs the card identifier over UART when a compatible tag is detected. It cannot store, modify, or secure data on the card. Confirm that the host controller supports UART TTL levels before integration.

How it compares

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

Price $12.99
Cheaper than about 90% of the 294 comparable items (median $21.99).

Specifications

No published specifications for this item yet.

Questions about this item

What voltage range does the SMUGDESK RFID IC Card Reader need to operate?

The module runs from 3.3 V to 5 V DC, so it can be powered directly from most microcontroller boards without an extra regulator.

How do I connect the reader to an Arduino or STM32 and what wiring mistake should I avoid?

Wire the module's UART TTL pins to the controller's serial port, matching TX to RX and RX to TX; the common error is crossing those lines or forgetting a common ground.

Will the built-in antenna need replacement or periodic cleaning during long-term use?

No, the antenna is integrated on the PCB and has no moving parts, so it requires no scheduled maintenance or antenna replacement.

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