5Pcs Dual Frequency RFID Keyfob 125Khz EM4100 and 13.56Mhz 1K Chip Keychain Keys Ring Read Only Red Blue Yellow(5pcs Yellow)

• Small enough to fit on a key ring
• Provides an external number for easy identification and control Can be placed on a key ring for convenient entry
• Supports formats up to 85 bits, with over 137 billion codesRFID/HID/T5577/CET5577/EM4100/TK4001/EM4001/TK4100/ISO11784/11785/ISO FDX-B /Manchester/FSK/PSK/NRZ etc.
• Long-lasting durability in construction for sustained performance
• Compact and easy to carry and use,Rewritable functionality: Can be written countless times

Welcome to my store, we will provide you with high-quality products and high-quality services, if you have any questions about the products, you can contact us, we will Size: you within 24 hours! Dual Frequency RFID Key Fob 125Khz EM4100 and 13.56Mhz 1K Chip Characteristics: 1.100% New And High Quality, Waterproof, Dustproof 2. Dual Frequency, Dual Chip, Compatible 125 Khz And 13.56 Mhz Access Control System 3. Read-Only, With No External Power Required Specification: Frequency: 13.56 Mhz + 125 Khz Card Chip: F08 + Tk4100 / Em4100 Dual Chip Data Retention:> 10 Years Color: Blue, Yellow, Red Operating Temperature: -20-85 Degrees Notice: Due to different monitors, there may be some color difference, which is normal.s