FORMAT: These wiegand proximity Cards are programmed to be compatible and similar to the Kantech Ioprox XSF 26 Bit eXtended Secure Format COMPATIBLE: These proximity credentials are configured to be compatible with Kantech ioProx card readers. APPEARANCE: 85mm X 54mm X 0.8mm white clamshell keyless entry cards NUMBERING: Over 4 billion code possibilities ENCODING: Dual Encoded to prevent card duplications Similar to ioProx, P10SHL, P20DYE, P30DMG, P40KEY, P50TAG Works with P225XSF ioProx, P325XSF ioProx, P600 ioProx, and P225KPXSF ioProx INFORMATION WE NEED FROM YOU Facility Code