patented hub led display with signal indicator

{"cid":"91214300","title":"79MM Aluminum Alloy Cabinet CM-E Rental LED Display with Signal in dicator HUB For Concert Stage Events","imgUrl":"https:\/\/img.chinax.com\/nimg\/3b\/2c\/4c91354d6aea5a8cbbce4aa5d5d6-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"Charming","Model Number":"P2.9 & P3.91","Minimum Order Quantity":"2pcs","Delivery Time":"30 Working Days after Payment","Certification":"CE, ROHS, LVD, EMC, CB, BIS, UL","Place of Origin":"China","Payment Terms":"L\/C, T\/T, Western Union, Paypal, Cash","Supply Ability":"500 PCS per week","Packaging Details":"Carton Case, Wooden Case, Flight Case","Pixel Pitch(MM)":"2.976MM 3.91MM","Protection Level":"IP65","Maintenance Method":"Back Maintenance","Dimension(MM)":"500x500x79MM\/ 500x1000x79MM","Working Voltage":"AC 110V\/220V,\u00b115%","Brightness(CD\/m)":"\u22653500 CD\/\u33a1","Working Temperature":"-20~60\u00b0C","Refresh Rate(Hz)":"7680Hz"}}