The Sealey AL539B Autel Eobd Code Reader with an internal battery back-up The Sealey Autel AL539B is an ultimate automotive analyser that combines a multimeter, scope, starter test and EOBD code reader. This CAN Enabled tool retrieves generic P0, P2 and P3 and U0 codes for engine emissions and manufacturer specific P1, P3 and U1 codes. This reader/tester reads and displays live ECU/PCM data stream, plotting functions graphically and stores freeze-frame data. Features: Features built-in data library with lookup functions Includes battery clamps for non-load battery testing Clear, concise DTC generic definitions displayed on screen Internal battery back-up for off-vehicle data review/analysis Can be updated via web-based downloads and will link with a PC Live display of O2 sensor data which can be stored and played back Starter test function allows testing of the battery and charging system Patented One-Click I/M Readiness button to eliminate drive cycle guesswork Auto-ranging automotive diagnostic multimeter with volts, current and resistance Supplied with operating instructions, CD, USB cable and test leads in storage pouch Reads and displays live ECU/PCM data stream, plotting functions graphically and stores freeze-frame data Fast and easy access to any vehicle\'s EOBD diagnostic codes, establishing cause of illuminated engine check light (MIL) The Autel AL539B, an ultimate automotive analyser that combine a multimeter, scope, starter test and EOBD code reader CAN Enabled tool retrieves generic P0, P2 and P3 and U0 codes for engine emissions and manufacturer specific P1, P3 and U1 codes Scope function to visually test component signals, with the added benefit of maximum/minimum volts, frequency and duty cycle displayed Supports new extended sensor list (SAE J1979 2007), trouble-shooter code tips and repair information to identify root cause of the DTC, so saving time Specification:  Model No: AL539B Battery test ranges CCA: DIN, SAE, IEC, EN