Seller bestrfidcard

as we known ,the rfid cards have different frequency,here we mainly introduce the 125khz low frequency rfid smart cards . the 125khz low frequency rfid smart card is with 125khz low frequency ,in normal ,the low frequency rfid smart cards only support read data . the main 125khz low frequency rfid chips have em4200,em4305,tk4100,t5557,t5577,em4550,hitag 1,hitag 2 etc cards low frequency usually thought be passive card, which work by inductive coupling energy obtained from the radiating near-field coupling coil of the reader. when transferring data between the card and the reader low frequency, low-frequency card reader must be located antenna radiating near-field region. read lf tags of less than 1 meter distance under normal circumstances. advantage is mainly reflected in the low-frequency card: card chips generally use conventional cmos technology, with power-saving, low-cost characteristics; operating frequencies from radio frequency regulatory constraints; can penetrate water, organic tissue, wood, etc.; very close fit , low speed, the amount of data requires less application. ? low-frequency card disadvantage is mainly reflected in: less amount of data storage card; only suitable for low-speed, close-recognition application; compared with the high-frequency reader: card antenna turns more, some of the higher costs. mainly used low-frequency card attendance access control hotel door label animal production management. shenzhen frondent technology co ltd could provide the high quality 125khz cards