... scanning circuit,support auto pan scan with designed speed between left/right limit.8 masking protect zone ... PELCO-C, UNIVISION(V1,V2), AD, PHILIPS, VICON, VCL,MOLYNX, DIAMOND,KALATEL, PANASONIC, SENSORNT etc. Class CapabilityBrand ... inner cover, enhanced mask monitoring function.Infinitely variable speed transmission,360°continuous pan, 90°Tilt Auto Flip ... 180sec.Temperature0-50 Bracket High Speed Dome