Portable static meter: Constructed from conductive anti-static material, featuring a built-in grounding clip for reliable measurement results. Includes a dedicated ground wire for accurate measurements. Digital display: The red LCD shows positive charge, and the blue LCD indicates negative charge. The display updates at a rate of five times per second, facilitating easy observation and recording of values. Accurate testing: Measures electrostatic fields within a range of 0 to 20KV at a working distance of 1 inch, equipped with an LED light to ensure proper measurement distance of 25mm. Easy operation: Aim the meter at the object until the two red LED projections overlap (standard distance approximately 25mm) to read the static value conveniently. The balance board can be removed to switch between measurement modes. Versatile applications: Suitable for various fields including industrial production, laboratory research, safety testing, electronic manufacturing, and the textile industry.