Complete air/fuel ratio metering system with built-in data logging. Includes WEGO III unit shown above, Bosch LSU4.2 5-wire wide-band oxygen sensor, 18x1.5mm weld nut for mounting sensor on exhaust pipe, and software on CDROM

· Versatile tuning aid for all carbureted and fuel injected engines displays air/fuel ratio (AFR) and logs over 2 hours data including AFR, engine RPM, and a spare 0-5V analog input for sensors such as throttle position or manifold pressure

· Can be used for on-road or dyno testing

· Suitable for automotive, motorcycle, and other small engine applications

· Highly accurate with less than ±0.10 AFR error over 10.3 - 19.5 AFR range

· Easy free-air calibration procedure corrects for sensor aging effects

· 0-5V analog AFR output for interface to dyno instrumentation

· Ultra-bright daylight readable blue LED display with automatic dimming under low light conditions

· Wide supply voltage range from 11-16V allows operation from battery on small engines or race vehicles without an alternator. Current draw is approx. 1 amp

· Built-in USB interface

· Fully encapsulated with water-proof LED display

· Compact size: 4"L x 2"W x 0.5"H