ITEM NAME:CC2531 Wireless Sniffer Packet Protocol Analyzer Module USB Dongle with shell â„–[ Description: 1.Size: 4.1 * 1.6cm 2.Board Thickness: 1.6mm 3.Operating Frequency: 2.405-2.485GHz 4.Wireless Transmission Speed Rate: 250Kbaud 5.Power Consumption: