Main technical parameters Operating frequency: 125KHz Applicable chip: EM4100, EM4102, TK4001, TK4100, EM4305, nezvimwewo. Output interface: serial port & Wiegand 26 Working voltage: DC 3.5V~6V Working current: 25mA Read clew: Buzzer and LED light output pin Read distance: ID thick card 40cm (associated with antenna and environment) Module size: 16×24mm Module weight: 10g