10PCS TK4100(EM4100) RFID 125khz 3M Stickers Coins 25mm 18mm.20mm,30mm Smart Tags Read-only Access Control Cards
Description:
- Chip: TK4100
- Diameter: 25mm in stock
- Material: Plastic PVC
- Operation frequency: 125Khz
- Detecting distance: 3-10cm
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