Portable electrostatic meter: The meter features a conductive anti-static housing and includes a built-in grounding clip for reliable measurement results. Connect to the dedicated ground wire for accurate testing. High accuracy: Measurable range of 0 to 20KV with a working distance of 1 inch. An LED light assists in maintaining the correct distance of 25mm from the object being measured. Clear digital display: The LCD displays positive charges in red and negative charges in blue, with an update rate of 5 times per second for easy observation and recording of values. Simple operation: Aim the meter at the object until the projections of the red LED lights overlap (standard distance of about 25mm) to obtain static value. The balance board is removable for easy switching between measurement modes. Versatile application: Ideal for various settings including industrial production, laboratory research, safety testing, electronic manufacturing, and the textile industry.