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 HID Global and CYNTAG. 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.

Parallax, Inc. is the exclusive manufacturer and distributor of the Parallax RFID Reader Module. The RFID Reader Module is available in two versions: Serial TTL interface (1-wire, 2400 baud, Parallax #28140) or USB (Parallax #28340). For questions and technical support, contact support@parallax.com.

Module Highlights:

• Serial TTL or USB interface
• Requires single +5VDC supply (USB version is bus-powered and requires no external supply)
• 3.25″ L x 2.45″ W
• Bi-color LED for visual indication of activity
• -40 degrees C to +85 degrees C operating temperature

Documentation (from Parallax):

• Technical Manual: Parallax RFID Reader Module
• Sample Code: BASIC Stamp 2
• Sample Code: BASIC Stamp 1
• Sample Code: Parallax/Ubicom SX (SX/B)
• Sample Code: RFID Security Application (SX/B)
• Video: RFID Door Lock