The Charge Plate Monitor is a professional device for evaluating the performance of air ionisers. It has a 7-inch touch screen for easy operation and intuitive data display, and complies with international standards (IEC61340-5-1 and ANSI/ESD STM3.1). Its high-precision measurement (0.1V resolution, DC-80Hz) can accurately test AC/DC static eliminators, especially suitable for high-frequency AC ioniser testing. Its detachable test plate design is suitable for small spaces and internal testing, avoiding interference. Its built-in temperature and humidity sensors monitor environmental impact, support automatic determination (PASS), data export (USB/U disk) and long-lasting lithium battery power supply. It is the ideal tool for ESD electrostatic protection, ion balance testing, cleanroom monitoring and other scenarios, ensuring the efficient and reliable performance evaluation of ionisers.