GS M500BT, 2D-Imager-800D Scan Engine Mini BT4.0 Barcode scanner: 1. Its Bluetooth 4.0 has HID, SPP, BLE, and Master & Slave Function, 2. To support off line data collect, USB-HID or USB-VCP (USB Serial) wired connection, 3. To support wireless connection with IOS, Android, Windows phone, Windows OS, etc. 4. To support the image Upload with USB-VCP, 5. To decode some DPM code.