ELM327 Bluetooth/WIFI Car Diagnostic Scanner Auto Fault Code Reader Tool OBD2 Features: ELM327 1.5 has more stable connection and quality. original, and firmware version is  V1.5 support all standard OBD2 protocols. No wires or batteries (adapter is powered by the diagnosis size sockets) Wifi version Support IOS /Anroid/Windows system. Can do most of OBDII gasoline and diesel 12V cars,but can't support all OBDII cars. The power button is only used for reset the device , not have the function of turn on or turn off. When stop communication, wait half an hour, auto sleep Better than V1.5, Small size, compact structure, more stable connection and durable The power button is only used for reset the device , not have the function of turn on or turn off. The adapter uses the fastest and most reliable ARM chips. Wireless (wifi version) 10~20 meter. Support OBDII Protocols: SAE J1850 PWM (41.6Kbaud) SAE J1850 VPW (10.4Kbaud) ISO9141-2 (5 baud init, 10.4 Kbaud) ISO14230-4 KWP (5 baud init, 10.4 Kbaud) ISO14230-4 KWP (fast init, 10.4 Kbaud) ISO15765-4 CAN (11bit ID, 500 Kbaud) ISO15765-4 CAN (29bit ID, 500 Kbaud) ISO15765-4 CAN (11bit ID, 250 Kbaud) ISO15765-4 CAN (29bit ID, 250 Kbaud) Free APPS : "Torque Lite/Pro", "DashCommand", and "OBD Car Doctor" Support for ALL ANDROID Devices (Samsung S5 S4 Note 3 Note 2 LG 2 Google Nexus, etc) Works Perfectly for Windows. Bluetooth Scanner pairs with any Windows Phones It CANNOT be used with iOS devices such as iPhone and iPad Package included: 1 x Bluetooth Car Scanner or 1 x WIFI Car Scanner