ID-20LA scanner not scanning other 125KHz RFID tags

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1

I purchased one of these RFID readers:

RFID Reader ID-20LA (125 kHz) - SEN-11828 - SparkFun Electronics

https://www.sparkfun.com/products/11828

And I was able to get it to beep and scan these button tags just fine, using an Arduino, and the provided sample code.

RFID Button - 16mm (125kHz) - SEN-09417 - SparkFun Electronics

https://www.sparkfun.com/products/9417

However, I also ordered some 125 KHZ RFID tags from this site here:

Custom Cloth Wristbands with PVC RFID – Arnett Designs – Arnett Credentials

https://arnettcredentials.com/products/pvc-tagged-cloth

I can verify that they said 125 KHz tags in the packing slip. But they do not scan or beep when I put the tags up to the scanner.

Can you tell me if you know any reason why this might be?

I am putting the tag right up to the scanner, so I don’t think it is a distance problem.

Are there multiple types of 125 KHz tags?

I am using this Arduino library:

#include “SparkFun_Qwiic_Rfid.h”

Thanks!

2

Yes, the type of RFID chip used has to be compatible with the reader - that particular reader is:

EM4001 64-bit RFID tag compatible

9600bps TTL and RS232 output

Magnetic stripe emulation output

Meanwhile, the wristband’s page https://arnettcredentials.com/products/pvc-tagged-cloth lists: "Chip Options: Mifare Classic 1k, Fudan F08, Mifare Ultralight EV1, NTAG213, ICODE SLIX

Chips work with most major scanning companies. Call for more options." - perhaps give them a call and see if they carry a compatible chip version?