Waterproof ABS Material The RFID key tag is made of highquality ABS material, the shell is strong and durable, has good waterproof, shockproof and anticorrosion performance, so that you can use it better in your . After multiple processes, the product quality can be well guaranteed. The red and blue colors give you more choices.Comes with a portable key ring Each tag is equipped with a key ring, which can be hung on keys and other items for easy use and to avoid being lost. The volume of the key ring is 3.32 x 90.6 cm, which is small in size and convenient to carry. It can be easily put into pockets and backpacks. The shaped appearance makes it better for daily use.TK4100chip The type of RFID sensor ID card chip is TK4100, working frequency 125Khz, you can choose the appropriate access card according to your needs. Compatible with standard ID access devices or ID. Each chip has its own ID, which is stored in the chip and printed on the back of the label for security.Read only and easy to read The chip is readonly and cannot be programmedIt does not support HID and is not compatible with UHF and encrypted , such as , Radio, Cobra, HID, APCiK, Indala, Isonas, , , etc. The waterproof RFID key tag is suitable for 125KHZ card readers, and the reading distance is 010 cm.Good help for access control system RFID key tag can be used in a variety of applications, suitable for access control, hotel locks, staff attendance, school campus visits, identity identification, security systems, parking lot access, attendance systems, etc. It can be used wherever an access control system is needed, such as offices, homes, schools, communities, etc.Support Read only, not writable.Working frequency125KHZsize29336mmMaterialABSColor blue, redPackage contents50125Khz RFID Card TagsOnly the above package contents, other products are not included.Note Light and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowable measurement error is13 cm.