50pcs/Lot RW1990 Key Rewritable RFID Tag Sauna Can Copy Can Change Code RW1990 Touch Memory Key Compatible RW1990 iButton(BK)

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!50pcs/Lot RW1990 Key Rewritable RFID Tag Sauna Can Copy Can Change Code RW1990 Touch Memory Key Compatible RW1990 iButtonDimension: 16.25*5.89mmChip type: RW1990RW1990 feature:1.RW1990 ibutton2.Low-cost3.water proof4.Rewritable ,DS1990A and TM1990A iButton ,5.can be copy,RW1990Technique Parameters:.America DALLAS encryption.Breakdown Rate:1/100,000.Serial Number:Only global 64 bit numbers.System Logic:64bits pin protection.Memory:8kb RAM.Inductive Type: touch.R/W and encrypt.R/W times:1,500,000,000.Working Temperature:-40~85.Lifetime:>20years.TM Dimension:16.25*5.89mm.Weight: 6g/pcNotice:Due to different monitors, there may be some color difference, which is normal.s

• 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