These RFID cards are used with Grandstream's GDS3710, GDS3705 and the USB RFID card reader. This non-writable proximity induction card receives radio energy from the RFID card reader to power the card and its ability to interact with the GDS3710 and GDS3705. This contactless ID card is easy to setup and use, making it an ideal solution for a wide range of facility access, attendance and security applications.