Use the ET350 Non-Contact Voltage Detector Pen to Quickly Determine the Presence of Magnetic Fields

We've seen quite a few jumbo-marker-size NCV (non-contact voltage) detectors, but the Triplett ET350 Magnetic Field Detector is the first we've seen that also has a mode for detecting magnetic fields. Its small LED flashlight spot beam is well-sized for working around electrical gang boxes or work boxes and gets its own control button. A second button sets its detection mode, and the color of an LED there shows which is active: red for high (90-1000 VAC, good for power line checks), green for low (24-1000 VAC, useful for thermostats, lower-voltage lighting or more sensitivity), yellow for magnetic fields (including electromagnetism).