The Parallax Radio Frequency Identification (RFID) Reader Module is the first low-cost, integrable solution to read passive RFID transponder tags from up to 4 inches away. 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.

The Parallax RFID Reader Module works exclusively with the EM Microelectronics-Marin SA EM4100-family of 125kHz, passive, read-only transponder tags. A variety of different tag types and styles exist from such manufacturers as Sokymat and ACG. The most popular compatible tags are also available from Parallax. Each transponder tag contains a unique identifier (one of 240, or 1,099,511,627,776, possible combinations) that is read by the RFID Reader Module and transmitted to the host via a simple serial interface.

Parallax, Inc. is the exclusive manufacturer and distributor of the Parallax RFID Reader Module. For questions and technical support, please contact support@parallax.com.

Module Highlights:

• Serial TTL interface (1-wire, 2400 baud)
• Requires single +5VDC supply
• 3.25" L x 2.45" W
• Bi-color LED for visual indication of activity
• 0.100" pin spacing for easy prototyping and integration
• -40 degrees C to +85 degrees C operating temperature

Documentation (from Parallax):

• Technical Manual: Parallax RFID Reader Module
• Source Code: BASIC Stamp 2
• Source Code: BASIC Stamp 1
• Source Code: Parallax/Ubicom SX18/20/28 (SX/B)