Portable electrostatic meter: The meter features a conductive anti-static shell and a built-in grounding clip to ensure reliable measurements. Connect the provided dedicated ground wire for accurate readings. Digital display: The LCD screen shows positive charges in red and negative charges in blue, with an update rate of 5 times per second for easy observation and recording. Accurate testing: Capable of measuring a range from 0 to 20KV with a working distance of 1 inch, the device includes an LED light for ensuring the correct distance from the object, set at 25mm. User-friendly operation: Aim the meter at the object until the projections of the two red LED lights overlap (standard distance of approximately 25mm) to obtain the static value, facilitating observation and recording. The balance board is easily removable for switching between measurement modes. Versatile applications: Suitable for use in industrial production, laboratory research, safety testing, electronic manufacturing, and the textile industry.