Milwaukee's milliamp clamp meter, No. 2231-20, can make diagnosing air-fuel sensors easier than ever before. Capable of being accurate at the milliamps level, the user can simply clamp the tool around the wire and get the accuracy of using a multimeter in series with a load without the hassle. Over 10X faster than measuring milliamps with a traditional multimeter, the tool can measure 0 to 99 milliamps to cover a broad range of control signals if needed. Enhanced design features of the tool will allows technicians to troubleshoot problems with an amp clamp like never before.