: Hold the meter exactly 1 inch (25mm) away from the target object.

: Point the sensor toward an uncharged (earthed) area and press the POWER button.

: For accurate measurements, ensure the conductive case is grounded using the provided grounding lead.

: Press the HOLD button to freeze a reading on the display, which is helpful in tight spaces where the screen is hard to see. Technical Specifications SIMCO FMX-004 Electrostatic Field Meter User Manual