Please note, EM4100 chip is read, that is, it can not be recorded. If you want to buy a rewritable chip, you have to buy the chip EM4305 tags.
Please open the link to purchase EM4305 chip tags.
//www.aliexpress.com/store/group/EM4305-125khz-Rewritable/1427387_506391004.html
we provide the Random color by default, if need customize the color, please leave message to tell us
Please notice that this is not writable one (not copiable, not duplicat), it registe to the system that you want to use, then use the keyfob directly.
Description:
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100% brand new and high quality, original from 5YOA
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Operation frequency: 125Khz
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Each token pre-programmed with unique ID which is printed on it
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Each comes with Key ring included
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Compatible with all RFID reader to gain access
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Card read distance: 0-15 centimetres
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Water resistant
Package includes:
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10 x RFID Number 3 shape Keys
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