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Active RFID Tags

SYNOTAG 2.4 GHz active RFID readers and tags are closed system and designed for medium to long range reads of 1-1500 meters.

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Active RFID Tags

Mount the SM-5502 to any asset using a screw, a cable tie or a strong adhesive to benefit from long range RFID reads at a distance of up to 150 meters....
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SM-5502 Active RFID Asset Tag

The SM-5503 Active RFID Fob puts long-range key and asset control right in the palm of your hand....
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SM-5503 Active RFID Key Fob

The SM-5504 Very Long Range Active RFID Tag is read only and the permanent 4 byte ID can be read at up to 1500m....
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SM-5504 Very Long Range Active RFID Tag

The SM-5505 Dual Frequency Active RFID Tag is a 13.56 MHz and 2.4 GHz waterproof clamshell card in one....
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SM-5505 Dual Frequency Active RFID Tag

The SM-5506 Waterproof Active RFID Tag is a clamshell card worn on a lanyard around the neck or placed in the windshield of a vehicle....
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SM-5506 Waterproof Active RFID Tag

The SM-5507 Dual Frequency LF Active Wake Up RFID Tag uses the 125 KHz frequency to wake up the tag so it can send its 2.4 GHz active tag ID to the reader....
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SM-5507 Dual Frequency LF Active Wake Up Tag

The SM-5508 is made of PVC and is waterproof IP50 with a 4 byte ID and 512-byte memory.=...
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SM-5508 Active RFID LED Tag with Buzzer

The SM-5510 is the size of a coin and can be mounted to any surface or asset using a screw, a cable tie or a strong adhesive....
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SM-5510 Small Active RFID Asset Tag

The SM-5531 Active RFID Wristband is adjustable to any sized wrist and has a long range RFID reading of up to 150 meters....
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SM-5531 Active RFID Wristband

Active RFID Explained

Active RFID uses 2.4 GHz microwaves for the auto-ID of people and assets at longer distances (1-1500 meters) than short-range passive (1-30 cm) or semi-passive RFID tags (1-3 meters). Like any other type of RFID system, a tag, a reader and a software application/database are all required to make an active RFID system functional.

An active RFID tag is equipped with a small battery inside that is used to power the tag circuitry. Sometimes that tag battery can be replaced to extend the life of the tag. The active RFID tag emits a signal about every 500 milliseconds (can be factory adjusted) that is picked up by the reader when the tag and reader are in set range of each other.


Read distance is normally attenuated using the software on the reader side of the system. Some of our readers are offered with directional or omni-directional antennas that allow the user to create specific reading zones. This is very useful for applications where a choke point at an entry/exit door or a loading bay is needed to check people and assets and perform real-time security monitoring as they come and go from a facility.

Our readers typically read up to 200 tags at one time. As the signals emitted from the tags are not synchronized, many more that 200 tags can be read in the space of a few seconds.

An active RFID system has many advantages and a few disadvantages that should be considered when evaluating whether or not it is the correct technology for your project:


  • Long distance reading of up to 1500 meters
  • Capable of operating in rugged environments for years at a time
  • Suited to many types of applications


  • Tag cannot function without battery power. This limits the lifetime of the tag.
  • Tag can seem expensive at USD 10 or more each but cost-to-benefit can be very high depending on the application
  • Tag size can be large due to inner circuitry and not suit some applications
  • Maintenance costs for an active RFID tag can add up if batteries are replaced
  • Dead tag battery could result in misreads
Our active RFID tags and readers are normally deployed in these types of applications:

Pair our readers with cost-effective 2.4 GHz active RFID tags that are equipped with a long-life battery and can usually be customized to suit your special requirements. Select the right active RFID tag for your project from our broad range of tag shapes and sizes for active RFID applications that range from asset management and access control to manufacturing, security and people tracking applications.

  • RFID for Asset Security
  • RFID for Asset Tracking
  • RFID for Vehicle Toll Collection
  • RFID for Vehicle Access Control
  • RFID for Container Management
  • RFID for Construction or Building Sites
  • RFID for Patient Wandering Applications
  • RFID for People Tracking and Access Control
  • RFID for Manufacturing and Production Management