Wireless Barcode Laser Scanner 2.4GHz Handheld Rechargeable Cordless Automatic Scan Gun Reader with USB Receiver Power Adapter and Cable for Supermarket Book Magazine Store Plug and play, no need to install any software or app, easy to use All control systems uses large scale integrated circuit boards from America or Europe to ensure the working efficiency, stability and integrity 30M Effective obstacle distance, effective in range of 200 meters of spacious place, the scanner emits three short beep when it beyond the effective range or upload without success Inventory model is simple and easy to use, can store 5000 bar code information (customization is needed while over 5000) Auto sleep mode, low power consumption to Micro-Ampere (10UA) as common battery leakage current under natural condition