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Compact black RFID card reader with three-wire RS232 cable

Jedrek

Jedrek RS232 RFID 13.56 MHz NFC Card Reader

SKU CH-C2N3-HSGW4

Reads 13.56 MHz RFID and NFC cards via RS232 serial interface at 9600 baud for access control systems

  • TypeKeyless Entry System
  • Contactless entry with 13.56 MHz ISO14443A card support
  • Direct RS232 serial connection at 9600 baud for system integration
  • Reads UID serial numbers for authentication and access control
  • High sensitivity and stable performance with low operating current
  • Simple three-wire cable: 12 V power, ground, and data output

Universal RS232 RFID Reader

The Jedrek RS232 RFID reader operates at 13.56 MHz to read UID serial numbers from ISO14443A and iCLASS cards. It connects to host devices through a standard RS232 serial port using a 3-wire interface cable. The unit is designed for integration into authentication and access control systems. It delivers high sensitivity with low working current and stable performance.

For Access Control Integrators

This reader suits engineers adding contactless card entry to existing RS232-equipped controllers or PCs. It supports ISO14443A and iCLASS credentials without additional protocol conversion. Builders needing Wiegand output, USB connectivity, or long-range UHF reading should consider alternative form factors. The fixed 9600 baud rate also limits use in high-throughput logging applications.

Simple Three-Wire Installation

Wiring uses only three conductors: red for 12 V DC input, black for ground, and green for RS232 data output at 9600 8N1. The interface operates at true RS232 voltage levels, not TTL, so direct connection to microcontroller UARTs requires a level shifter. No drivers are needed on the host side beyond a standard serial terminal. Miswiring the power leads is the most common cause of failure during setup.

Highlights

  • Contactless entry with 13.56 MHz ISO14443A card support
  • Direct RS232 serial connection at 9600 baud for system integration
  • Reads UID serial numbers for authentication and access control
  • High sensitivity and stable performance with low operating current
  • Simple three-wire cable: 12 V power, ground, and data output

Specifications

TypeKeyless Entry System

Questions about this item

What RS-232 serial port settings must my access control system use to communicate with this reader?

The reader transmits at 9600 baud, 8 data bits, no parity, 1 stop bit (8 N 1) on true RS-232 voltage levels, not TTL.

Will the reader recognise my existing ISO 14443A cards without re-enrolling them?

Yes, it reads the UID serial number from ISO 14443A and iCLASS credentials, so cards already enrolled in your system will be detected.

How can I confirm the unit is powered and transmitting data after wiring the three-wire cable?

Apply 12 V DC to the red wire, ground the black wire, then monitor the green wire — a valid card tap should output the UID at 9600 baud RS-232 levels.

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