... RS232 multi protocol communication, desktop or ceiling mount High Reliability USB PTZ Video Conference Camera Features² Build-in capture ... card, with USB² Integration design, refined aesthetic shape² Build-in SONY CCD module² 216X zoom (18 optical*12 digital)² ... 582 (V)Signal SystemNTSC/PALHorizontal Resolution550 TVLSynchronizationInternal & ExternalLens18X Optical,F=4.1mm(tele)~73.8mm(wide),F1.4~F3 ...