The flagship Teseq NSG 438 30 kV ESD simulator supports up to 30 kV air and contact discharge, equipped with standard IEC discharge network and over 60 optional RC networks to meet strict automotive OEM ESD requirements. The battery-powered handheld gun enables offline mobile testing, with built-in discharge detection, auto alternating polarity and ISO self-calibration. The NSG 438A variant adds residual charge bleed-off for battery-powered ungrounded devices. Ideal for R&D verification and compliance certification of mobile phones, home appliances, medical equipment, new energy and automotive components. With an intuitive color touch screen and multi-layer high-voltage safety protection, it is the standard ESD tester for global EMC laboratories.