RFID Reader EM18 Board with Serial TTL Interfacing 125 KHz

The EM18 RFID Reader Board is a compact contactless reader designed to read 125 KHz RFID cards and tags and output the tag ID through a simple TTL serial interface. It offers fast stable performance and easy integration with microcontrollers making it ideal for access control and identification systems.

Based on the entity reference EM 18 RFID reader module this board includes a built in antenna LED indicator and buzzer for quick tag detection feedback. It can be directly connected to Arduino Raspberry Pi ESP32 STM32 and other development platforms without complex circuitry.

KEY FEATURES

Supports 125 KHz RFID tags and cards

TTL serial output for direct microcontroller interfacing

Built in antenna for reliable reading

LED and buzzer indication

Fast response time

Low power consumption

Compact and easy to mount

Plug and play operation

SPECIFICATIONS

Model EM-18 RFID Reader Module

Operating Frequency 125 KHz

Operating Voltage 5V DC

Communication Interface UART TTL serial

Baud Rate 9600 bps

Reading Distance up to 5 to 10 cm typical

Tag Compatibility EM4100 and similar 125 KHz tags

Output Data 12 byte tag ID

Board Type RFID reader board with antenna

INTERFACES

VCC Power supply

GND Ground

TX Serial data output

RX Serial input optional

Buzzer and LED status indicators

APPLICATIONS

Access control systems

Attendance machines

Door lock systems

Security identification

Time tracking

Smart card projects

Industrial automation

Arduino and embedded projects