10 Pcs RFID T5577 Writeable RFID Key Fob,125KHz Rewritable Keychains Support EM4100 Protocol for Access Control System

Quantity 10 pieces Blue T5577 Keyfobsize40mm x 30mm x 4mm. Our T5577 keyfob is made from a combination of high-quality ABS and metal materials that are not only strong and durable but also sophisticated in appearance. The ABS shell is well protected against daily wear and tear is waterproof and heat-resistant and its small lightweight design makes it easy to hang from a keychain for on-the-go portability without adding unnecessary bulk. ChipOperating at a frequency of 125kHz this key fob is equipped with the original T5577 chip renowned as one of the best rewritable chips in the market. The reading distance ranges from 2.5-10cm ensuring reliable and quick communication with compatible RFID readers. Application Our T5577 key fob supports both read and write modesmaking it highly adaptable.It can be seamlessly used with 125kHz RFID card copiers or duplicatorsallowing you to easily transfer or rewrite data as needed.Whether youre using it for access control systems or other applicationsits flexibility in data management is a huge advantage. Note The 10pcs T5577 keyfobs included in the package are the default empty command keyfobs without pre-programmed card numbers you cannot directly add them to RFID locks or use a card reader to read them. To test readwrite first copy data from an original card by a 125kHz replicator and then write it into the cardskeychains.