NFC Key fob – 13.56Mhz M1
KEY FEATURES waterproof, weather proof, easy attach, portable Tag Form Key Fob Material ABS Dimensions 3#: 40x32x4 mm Chip Type FM11RF08 (full compatible with M1 S50) Memory 1K bytes (716 Bytes free space) Protocol ISO14443 A / IEC14443 A Frequency 13.56Mhz Reading distance 0-10cm (depends on reader) Working Temperature -25° to +70°C (-13° to +158°F)