rs485 usb2 0 video conference solution

{"cid":"91224274","title":"LN-20XN Professional PTZ Camera with 20x Optical Zoom 1080p HD Video and SDI Interface for Conference Rooms","imgUrl":"https:\/\/img.chinax.com\/nimg\/1e\/ad\/5f143d93dd230f2f811593c2bacc-200x200-1.jpg","attrs":{"Brand Name":"Lntech","Model Number":"LN-20XN","Minimum Order Quantity":"1","Delivery Time":"7-15 working days","Place of Origin":"China","Payment Terms":"T\/T","Supply Ability":"2500","Packaging Details":"Carton","Product Type":"HD Video Conference Camera","Sensor Technology":"High-Quality CMOS","Maximum Resolution":"1920 \u00d7 1080 (Full HD)","Zoom Specification":"20x Optical Zoom","Video Output Type":"SDI Interface","Compression Format":"H.264 Standard","Control Interface":"RS485 Protocol","Storage Support":"Full HD Recording","Management Feature":"Reset Capability","Usage Environment":"Indoor Applications","Construction Material":"Aluminum Body","Warranty Coverage":"2-Year Protection","Production Origin":"China"}}