LENVII wireless 2D barcode scanner with the following functions:1. The QR code scanner can directly read all 1D 2D and QR barcodes from the LCD screen of a computer or mobile device, as well as poorly printed or damaged barcodes.The possible signal range for a 2.2.4G wireless connection can reach 50m, with an internal memory of 512KB and over 50000 data strings;300000 pixels, easy to handle 2D barcode with plastic material, industrial IP65 grade, withstands multiple drops of 5 meters, 2.4G, Bluetooth dual mode (433HZ mode) optional, supports wired and wireless transmission, and adopts the latest magnetic chargingPlease note thatAll wireless barcode scanners have undergone wireless pairing testing, and you only need to connect a USB receiver (dongle) to use them. If you are unable to connect, please try pairing again or contact us.When opening the scanner for the first time, please use a USB cable to charge (approximately 2 hours).