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Passive RFID Tag for Rail and Transportation Applications

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The TT-500-AAR is a next-generation RFID tag for rail and transportation applications. Compatible with legacy RFID readers including TransCore® Amtech-brand and TransCore® Encompass multi-protocol reader systems, the TT-500-AAR is a high-performance, AAR-S918A compliant tag for vehicle chassis, rail cars or intermodal containers. We designed the tag to be compliant with the AAR-S918A specification to ensure that customers can try the Thinkfiy TT-500-AAR without risk. Any AAR-S918A compliant reader system should work with the tag.

The TT-500-AAR is beam-powered, meaning it derives its power for operation from the RFID interrogator and does not require a battery. This gives the tag an extremely long service life and is environmentally friendly.

The TT-500-AAR incorporates recent advancements in RFID technology and brings them for the first time into the AEI/Rail market. Exceptional sensitivity, strong signal strength, an advanced antenna design and modern electrical protection differentiate the TT-500-AAR from other tags based on earlier designs.

The tag is one-time programmable, preventing unauthorized changes to data after commissioning. This programming operation can be performed at the factory or at the customer site using a Thinkify programming fixture.

The TT-500-AAR is RoHS-compliant and made in the USA.


  • Beam-Powered
  • Factory-Sealed Case
  • One-Time-Programmable “fused memory” for Data Security
  • Rugged Enclosure
  • Supports AAR-S918A Protocol

Technical Specifications

Frequency Range 902 to 928MHz
Typical Working Range 1.5 to 3 Meters depending on reader power and installation geometry
Polarization Linear, parallel to long axis of the tag
Power Beam-Powered. Tag activates at ~2V/M at 915 MHz
Life Expectancy > 10 Years
Dimensions 23.6 x 6.0 x 1.75 cm
Weight 150 g
Case Material UV-Stabilized, High-Impact Plastic. Factory Sealed.
Mounting Any smooth metal surface. Mounting by rivets or TIR-approved fasteners.
RFID Protocols AAR S918A, ATA
Read Rate Up to 85 rps
Operating Temperature -40°C to +85°C
Storage Temperature -55°C to +100°C
Humidity 0 to 100 percent relative humidity, condensing
Vibration 2 Grms, 10-200 Hz
Shock 30 G, half-sine pulse, 6 ms duration, 3 axes