Parallax RFID Card Reader (Serial)

• Low-cost solution to read passive RFID transponder tags
• 2400 baud serial interface
• Communication: Serial at 2400 baud (8N1)
• Compatible with phidgets RFID cards
• RoHS Compliant

The Parallax RFID Card Reader (Serial) designed in cooperation with Grand Idea Studio. The Parallax Radio Frequency Identification (RFID) Reader Module is the first low-cost solution to read passive RFID transponder tags. The RFID Reader Module can be used in a wide variety of hobbyist and commercial applications, including access control, automatic identification, robotics, navigation, inventory tracking, payment systems, and car immobilization.

There are a variety of transponder tags that come in different packages. Each tag has a specific range that is within 10% of the given distance for each type of tag. The reason for the 10% is due to environmental conditions and RFID modules.

Features:

• Low-cost method for reading passive RFID EM4100 family transponder tags
• 2400 baud serial interface
• Enable input allows module to be enabled/disabled by software
• Bi-color LED for visual indication of status

Compatible tags:

• Parallax RFID Tag 125KHz: 6.3cm (2.5") +/- 10%
• Parallax 125KHz RFID Tag - 50mm Disc: 6.8cm (2.7") +/- 10%
• Parallax 125KHz RFID Tag - Key Fob (Range: ~5 cm)

Note: No tags are included with the RFID Reader Module. This device can be connected to a PC serial port using a MAX232 line driver. The circuit isn't supported by Parallax, but it's possible to make this connection with a few dollars of parts or by using the USB version of the reader.