This is a high-quality automotive scanning tool, supporting all OBD-II protocols. The device is a small adapter that plugged into the vehicle OBD-connector. It can connect to any computers, tablets or smartphones through Bluetooth. Doing these simple operations, you will be able to do the following operations: -Measure the fuel consumption -Display real-time operating performance of the car, such as momentum, vehicle speed, oil pressure, coolant temperature, engine load, intake manifold pressure, throttle position, the values of oxygen sensors, air intake temperature, and more -Turn off the MIL (signal Check Engine) -Download data to external media in a variety of formats for later printing -Record various parameters, display graphics in real time, and more Small size, compact structure Plug and never unplug Stable wireless connection No wires or batteries (adapter is powered by the diagnosis size sockets) Stop communication, wait half an hour, auto sleep The adapter uses the fastest and most reliable ARM chips You will be able to perform a complete computer diagnostics car and even to correct minor faults without resorting to service stations Specification: Supply voltage(VDD): 12V Work temperature range: -20 +70C Storage temperature range: -40 +125C RF sensitivity(Basic Rate): -85db Modulation Mode: GFSK Frequency Range: 2402 2480MHz Transmission Range: 10m Bluetooth Profile: SPP UART Parameter: 38400, 8, n, 1 Supported protocols: -Automatic -SAE J1850 PWM(41.6Kbaud) -SAE J1850 VPW(10.4Kbaud) -ISO9141-2(5 baud init,10.4Kbaud) -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) -SAE J1939 CAN(29bit ID,250*Kbaud) -USER1 CAN(11*bit ID,125*Kbaud) -USER2 CAN(11*bit ID,50*kbaud) Default settings(user adjustable) Package included: 1 x KONNWEI KW901 ELM327 Bluetooth OBD Diagnostic Scanner Detector 1 x CD Software 1 x User Manual