Parameter Size: L44mm X W18mm X H112mm Color: black, white and yellow Power supply: DC12V, power consumption less than 1W Working frequency: 125 KHz (support EM card) Effective distance: 40 150mm Transmission distance: less than 200m Working environment: -20°C to 55°C; Relative humidity 5% to 95% Communication output: Standard Wiegand interface (RS232 optional) Water-proof function, applicable to outdoor application, mostly in the gates of communities