Handheld electrostatic tester: This device features a conductive anti-static shell with a built-in grounding clip for reliable measurements. It includes a ground wire for accurate detection of electrostatic fields in various environments. Precise measurement capabilities: Designed to measure electric fields ranging from 0 to 20KV at a precise 1-inch working distance. Integrated LED positioning lights ensure a consistent 25mm spacing from the target object for repeatable accuracy. Clear digital display: The red LCD indicates positive polarity while the blue displays negative polarity. With a rapid update rate of 5 times per second,this meter provides real-time data for easy monitoring and analysis. User-friendly operation: Align the meter until the dual LED projections overlap at the 25mm standard distance to capture static values instantly. It features a detachable balance board for quick switching between measurement modes. Versatile applications: Suitable for industrial production,laboratory research,safety inspections,electronics manufacturing,and textile industries,this handheld electrostatic tester addresses a wide range of antistatic testing requirements.