PTZ Control / Auto focus / ( 18x Optc. Zoom) 1/ 4" Sony CCD / 0.1Lux / Two-way audio support TCP-IP / DDNS real-time / Resolution : 520TVL Transmission on Internet Motion Detection Local recording / image capture / Alarm Auto IRIS interface / built in WEB SERVER Support 3 level user auto flip dome rotation Digital WatermarkHigh Quality video compression Lp 66 Standard/ Low Bandwidth.