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S4A Industrial Co.,Limited
Sales Hotline:  86 755 2945 0011
whatsapp/mob: 86 134 1050 0721
E-mail: sales@s4a-access.com
Address: 6th Floor, Haotai Industrial Zone,Minzhi Road,Longhua New District,Shenzhen,PRC. 518131
UHF Long Range Reader ADVANTAGE
For youPoints of service To provide you with 100 minutes of service
  • This is a mode of operation that prevents EPC Gen 2-compliant readers from interfering with 

    one another when many are used in close proximity to one another. Readers hop between channels 

    within a certain frequency spectrum (in the United States, they can hop between 902 MHz and 928 MHz) 

    and may be required to listen for a signal before using a channel. If they "hear" another reader using that channel, 

    they go to another channel to avoid interfering with the reader on that channel.


  • Active RFID tags have a battery, which is used to run the microchip's circuitry and to broadcast a signal to a reader 

    (the way a cell phone transmits signals to a base station). Passive tags have no battery. Instead, they draw power from the reader, 

    which sends out electromagnetic waves that induce a current in the tag's antenna. Semi-passive tags use a battery to run the chip's circuitry, 

    but communicate by drawing power from the reader. Active and semi-passive tags are useful for tracking high-value goods 

    that need to be scanned over long ranges, such as railway cars on a track, but they cost a dollar or more, 

    making them too expensive to put on low-cost items. Companies are focusing on passive UHF tags, 

    which cost under a 50 cents today in volumes of 1 million tags or more. Their read range isn't as far -- typcially less than 20 feet vs. 

    100 feet or more for active tags -- but they are far less expensive than active tags and can be disposed of with the product packaging


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Sales Hotline: 86 755 2945 0011
Mob: 86 134 1050 0721
E-mail : sales@s4a-access.com
Address : 6th Floor, Haotai Industrial Zone,Minzhi Road,Longhua New District,Shenzhen,PRC. 518131
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