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USB RFID 125kHz Tag Reader, Keyboard/RS232/SPI Output US$55.00

MOD-RFID125-BOX
USB RFID 125kHz Tag Reader, Keyboard/RS232/SPI Output


MOD-RFID125-BOX is an RFID station, able to read Manchester-encoded 64-bit EM4102 tags with 64 periods of carrier frequency per data bit. All the complexities of RFID tag detection, verification and decoding are handled by MOD-RFID125-BOX. After it strips the header and the checksums, it reports the 40-bit ID of the transponder tag.

MOD-RFID125-BOX has three modes of operation, easily switched by a single button press.

USB HID Mode: When the device is connected via USB to a host PC, it will represent itself as a USB HID keyboard. When an RFID transponder is detected in the vicinity, the module will type the HEX-representation of the transponder ID. Thus the ID is read by any application that accepts keyboard input, e.g. Notepad.

USB CDC Mode: In this mode, the device represents itself as a USB CDC virtual serial port. It provides a simple shell-like command-line interface for configuring and interacting with the module. The device echoes back the typed characters and waits for Carriage Return (Enter) before processing the line input. Any terminal software, e.g. HyperTerminal, can be used to open the COM port, assigned by the OS, and type in commands.

UART Mode: In this mode, there is no need for a USB connection. Instead, the device must be connected via UEXT connector to a TTL-level UART of a microcontroller system of choice. Many Olimex boards have a UEXT header to which this module can be connected; see below. The communication otherwise is the same as in USB CDC Mode. Note that in this mode, a 6-9V DC power supply is required.

RFID Tag Reader Features

  • Supports Manchester-encoded 64-bit EM4102 RFID tags with 64 periods of carrier frequency per data bit
  • Base RFID frequency 125kHz; up to 5-15 cm distance
  • USB port connection to PC
  • Standard 5V UART 9600,8N1 connection to user microcontroller boards
  • Three modes of operation, easily changed by pressing the button
  • Can be used by RS232, USB or SPI
  • Simple command-line interface in USB CDC and UART modes for configuration and data acquisition
  • Support for continuous and periodic RF scanning
  • Two LEDs indicating device status and tag presence
  • Dimensions: 100 x 50 x 10 mm (3.9 x 1.96 x 4")
By default, the device is set up for USB HID mode. Its default configuration is for continuous read, scan always, one report per second, LEDs activated. These parameters can be configured via the command-line interface in USB CDC or UART mode.

UEXT Connector

The UART mode of the MOD-RFID128-BOX is facilitated through a 2x5-pin UEXT connector, which provides a way to connect the RFID module to a system with a microcontroller. There are dozens of microcontroller systems and development boards that can connect to this module via UEXT using the supplied cable. Click on the architectures below for lists of compatible boards:

RFID Tag Reader Resources


Optional Recommended Products for this Item
USB 2.0 Cable, 6ft. A-Male / Mini-USB (5-pin) B-Male+ US$6.00
Power Supply 3-12V DC, U.S. plug, 6 connection tips+ US$11.00
Power Supply 3-12V DC, US/UK/Euro/AU Plugs, 100-240VAC+ US$13.00
RFID Clamshell Card Tag, 125kHz, EM4102 Read-only+ US$0.72
RFID ISO Card Tag, 125kHz, EM4102 Read-only+ US$0.72
RFID Keyfob Tag, 125kHz, EM4102 Read-only+ US$0.72
RFID Sticker Tag, 125kHz, EM4102 Read-only+ US$0.89
RFID Watch Tag, 125kHz, EM4102 Read-only+ US$1.89

This product was added to our catalog on Thursday 31 December, 2009.

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