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Stan Hall
Reviewed in the United States on May 28, 2024
These are not valid Atmel T5577 chips. You cannot write blocks 2-6 and even the block 0 data doesn't appear to write correctly. You can use these to emulate EM4100 as it only uses blocks 0 and 1. These are near useless to me and don't meet the product specifications.Price as reviewed: $22.9950PCS ID 125KHz RFID Writable Rewritable T5577 Key Fob Tag for RFID Writer Black
Jack's Facts ... and Opinion
Reviewed in the United States on May 21, 2024
These dcvbny 125KHz RFID Writable Rewritable T5577 Key Fob Tags are not suitable for some purposes. While a random sample of three tags were able to successfully programmed for one of the oldest RFID door lock systems, these dcvbny tags could not be programmed for use with an HID Prox system, which itself is pretty dated and relatively basic. The tag programming tools being used were confirmed to be working properly with other sourced T5577 tags, so the only remaining explanation is some issue within the RFID key tags themselves. While I will be able to use these for the most basic systems, unfortunately now I must buy alternatives for other systems.
scraejtp
Reviewed in the United States on March 3, 2024
Only blocks 1/2 can be written, making the fobs rather useless. Maybe if you plan to write for your own project, but if attempting to clone other cards pass on these.
Funk Doctor Krog
Reviewed in Canada on March 25, 2024
Not sure what chip is actually in the fob, but if it was a real 5577 all protocols should be supported.
Lina
Reviewed in Canada on March 2, 2024
No issues, works for residential building fobs, was able to write and to re-write
Bill Hand
Reviewed in the United States on February 15, 2024
Could not use to duplicate another T5577 badge. Could not write to.
Eric
Reviewed in Canada on December 25, 2023
Works exactly as described. Was able to read and wrote using my flipper zero no problem
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