Convenient and efficient product:2.4G wireless communication module and effective communication distance is 30-50 meters which will not be disturbed by other 2.4GHz device. * no worries about interference with others: Each scanner can be named with an individual ID to avoid interference with others when working in a network. * Easy inventory :Easy inventory with memory of 500-10000 codes, as convenient as working on a portable USB disk. * Efficient work:All control systems uses large scale integrated circuit boards to ensure the working efficiency, stability and integrity. * The Battery in the Scanner can be replaced so that When the battery is broken you just need to buy a new battery but not to buy another scanner