Readable and Writable Dallas iButton RW1990 Tag
> Material: ABS+Stainless steel
> Size: Diameter 16.25*5.89mm
> Thickness: 5.89mm
> Chip avaible: RW1990 / TM1990A-F5
> Function: Read and write (RW1990); Only read (TM1990)
> Material: ABS+Stainless steel
> Size: Diameter 16.25*5.89mm
> Thickness: 5.89mm
> Chip avaible: RW1990 / TM1990A-F5
> Function: Read and write (RW1990); Only read (TM1990)
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