Koso Mini 3 Narrow Band Air/fuel Ratio Meter

Koso's mini 3 air/fuel ratio meter was especially designed to help you tune your carbureted or fuel-injected engine. this meter can be easily installed on any type of 4-stroke engine by installing the sensor in the exhaust system and connecting the instrument to a dc 12 v source of power. kit includes everything needed for installation. note: compatible with 4-stroke engines only. detailed specifications: air/fuel ratio meter: display range: 12.2 ~ 17.2. setting unit: 0.1. effective temperature range: 14 ~ 140f (-10 ~ 60c). effective voltage: dc 12 v. meter standard: jis d 0203 s2. meter size (l x w x h): 2-3/8 x 7/16 x 1-3/16" (60 x 11.5 x 30 mm). meter weight: 0.78 ounces (22 grams). sensor type: race type o2 sensor: bg000s01.