Portable electrostatic meter: Featuring a conductive anti-static shell and built-in grounding clip, this device ensures reliable measurement results through proper grounding. Precise measurement range: Capable of measuring electrostatic fields from 0 to 20KV with a working distance of approximately 1 inch, and includes an LED light to maintain a distance of 25mm from the object being measured. Clear digital display: Utilizes a red LCD for positive charges and a blue LCD for negative charges, with an update rate of 5 times per second for easy observation and recording. User-friendly operation: Position the meter at a distance of about 25mm from the object until the two red LED lights align for accurate static value readings. The balance board can be easily detached for alternate measurement modes. Versatile application: Ideal for use in industrial production, laboratory research, safety testing, electronic manufacturing, and the textile industry.