Scanner type is bi-directional, support one to multi unit or multi unit to one. Manual trigger and continuous scanning. Long times service life of button. Supporting USB interface. Perfect for supermarket, warehouse, library, and bank,etc. Specifications: Scanner Type: Bi-directional Receiver antenna: 433MHz Light Source: 650 - 670nm(visible) Scan Rate: 100 scans per second Resolution: 0.10mm (4mil) PCS0.9 Reading Distance: 30 - 60mm; 98 - 100mm Interfaces Supported: USB Shock: 1.5m drop Current Consumption: 85mA (Idle Current Package including: 1 * Wireless Barcode Scanner 1 * Receiver 1 * Antenna 1 * USB Cable 1 * User"s Manual