Portable electrostatic meter: Constructed from conductive anti-static material with a built-in grounding clip for reliable measurements. Includes a dedicated ground wire for accurate testing. Accurate measurement range: Designed to measure static fields from 0 to 20KV with a working distance of 1 inch, featuring an LED light to assist users in maintaining the correct distance of 25mm from the object. Digital readout: The device features a red LCD for displaying positive charges and a blue LCD for negative charges, with an update rate of 5 times per second for easier observation and recording. User-friendly operation: Point the meter at the object until the two red LED lights align, approximately 25mm away, to obtain the static reading, allowing for straightforward value observation. The balance board is removable for switching between measurement modes. Versatile applications: Suitable for use in industrial production, laboratory research, safety testing, electronic manufacturing, and the textile industry.