model: SMD6900D Working frequency: 134.2kHz, 125KHz Support agreement: ISO11784 / ISO11785 Reading distance: > 20cm Work: FDX-B (full duplex nkwurịta okwu) Reader mgbawa: soft decoding Working power consumption: 1W Reading rate: 2~3meter/s Wiring way: 2.54 Insert-directly mode Working voltage: 5V Communication Interface: UART Baud rate: 9600 bps Size: 43.43×34.65×2mm Operating temperature: -20℃~+70℃ Humidity: 5%~ 95%