Mac Tools Et 130: Manual

: Touch the probe to a known power source; the "Power" LED should illuminate. Touch it to a known ground; the "Ground" LED should illuminate. Circuit Testing : Probe the wire or terminal in question. Red LED : Indicates a positive voltage (Power). Green LED : Indicates a negative voltage (Ground).

Because official digital manuals for legacy Mac Tools products can be difficult to find directly on the manufacturer's site, most users refer to the physical instruction sheet included with the tool. Mac Tools Et 130 Manual

: Indicates an open circuit or a voltage level outside the probe's detection range. Where to Find the Manual : Touch the probe to a known power