# RFID module, 125KHz, RDM6300, UART

> 125KHz RFID reader module, RDM6300 series, with serial UART output, compatible with Arduino and other development boards. Supply voltage 5V, decoding time under 100mS, reads EM4100 cards (read only or read/write), maximum effective reading distance up to 150mm. Version V0.3.

- Page: https://sigmanortec.ro/en/rfid-module-125khz-rdm6300-uart
- Price: 23.27 RON
- Availability: In stock; 1-2 zile
- Reference: 9082 · EAN: 5940164010772
- Category: Electronic components > Access Control
- Package (shipping data): 0.008 kg
- Updated: 2026-09-14
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 04:49 (Europe/Bucharest)

## Description

125KHz RFID reader module with UART output, ideal for access control projects with Arduino and other development boards. It operates at 5V, decodes quickly under 100 ms, reads EM4100 cards, offers an effective reading distance of up to 150 mm and ensures simple integration via serial interface, version V0.3.
125KHz RFID card reader module, compatible with Arduino and other development boards.
This module uses the RDM630 series with UART serial output and can be used in access control projects.
Specifications:
Supply voltage: 5V
Interface: Serial UART
Decoding time: <100mS
Card support: EM4100 read only or read/write
Effective maximum distance: Up to 150mm
Version: V0.3