1,Security Guard tour system 2,Completely shock resst 3,10,000 records stroage 4, ... )Weight180gMaterialAlloyPower6V ,50HZOperating temperature-400C~900CFunctionCommunicate with the computer via USB connector ,high-speed ,stable transmission and data transfer.CheckpointHUA-90AType:1990A ... , Safety, Goods issue, Inventory, Asset tracking etc... Security Guard tour system