125KHz tag Key Card / key fob:1)material:ABS2)color:red,yellow,blue,black,green,purple etc3)operating frequency:125KHz, 13.56MHz4)for access control system5)packaging detail: 100pcs/poly bag, 2500pcs/carton6)application: hotel, school, transportation, bank, hospital and so on. EM4305 feature:--512 bit EEPROM organised in 16 words of 32 bit --32 bit unique identifier (UID) --32 bit Password read and write protection --ISO 11784 / 11785 Standard Compliant --Lock feature converts EEPROM words in Read Only  --Two data encodings: Manchester and Biphase --Multi-purpose data rate: 8, 16, 32 and 64 RF clocks --Reader Talk First feature --Compatible with EM4469 communication protocol --100 to 150 kHz frequency range --On-chip rectifier and voltage limiter --No external supply buffer capacitor needed --  -40°C to +85°C temperature range --Very low power consumption  --Enlarged bumped pads (200 μm x 400 μm) for direct connection of coil (EM4305) --EM4205: 2 resonant capacitor versions 210pF or 250pF selectable by mask option --EM4305: 3 resonant capacitor versions 210pF,250pF or 330pF selectable by mask option Applications--Animal Identification according to ISO FDX-B--Pigeon races standard--Waste management standard (BDE)--Access Control

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