The Extech 480826 three-axis EMF meter is a simple, fast and reliable way to measure EMF field strengths around power lines, electrical installations and industrial machinery. It provides a three-axis electromagnetic field measurement (X, Y, Z direction). Calibrated for measurements of EMF field strengths with 30 Hz to 300 Hz bandwidth. The scope of delivery includes a sensor, a 93 cm cable, a 9 V battery and a hard case