RDM630 Datasheet – Arduino 125Khz RFID Module

Part Number: RDM630

Function: Arduino 125Khz RFID Module

Size : 38.5mm x 19mm x 9mm

Manufacturer: Unspecified

RDM630 datasheet


The RDM630 is a 125KHz read-only module for EM4100/TK4100 125KHz cards, which can read and output CSN card number. It has option of Wiegand26, RS232 and TTL output format.

RDM 125KHz card mini-module is designed for reading code from 125KHz card compatible read-only tags and read/write card . It can be applied in office/home security, personal identification, access control, anti-forgery, interactive toy and production control systems etc.

Specification and Parameter

1. Frequency 125KHz
2. Baud Rate : 9600(TTL Electricity Level RS232 format
3. Interface : Weigang26 Or TTL Electricity Level RS232 format
4. Power supply : DC 5V (± 5% )
5. Current : < 50Ma
6. Operating range : > 50mm(Depend on Card/Tag shape, manufacturer )
7. Expand I/O port : N/A
8. Indication light : N/A
9. Working temperature : -10 ℃ ~ +70 ℃
10. Storage temperature : -20 ℃ ~ +80 ℃
11. Max. humidity Relative humidity 0 ~ 95%


Reference Site: https://wiki.seeedstudio.com/125Khz_RFID_module-UART/


1. Support external antenna
2. Maximum effective distance up to 50mm
3. Less than 100ms decoding time
4. UART TTL interface
5. Support EM4100 compatible read only or read/write tags
6. Built-in external bi-color LED and buzzer driver
7. Small outline design

RDM630 Datasheet

RDM630 Datasheet PDF Download

RDM630 pdf

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