The UNI-T UT3510 series consists of two models: UT3513 and UT3516. Adopting Kelvin 4-wire measurement principle, it eliminates interference from test lead resistance to realize precise micro-resistance testing. Equipped with a 4.3-inch TFT LCD screen and 4.5-digit display, it achieves basic accuracy up to 0.05% FS and minimum resolution of 1 μΩ, with a maximum test speed of 60 readings per second. It supports automatic/manual/nominal range switching, built-in comparator sorting function, local data storage and U disk data export. Standard communication ports including RS232, USB Device and HANDLER support SCPI & Modbus RTU protocols, which can be connected with industrial computers and PLCs for automated production line resistance screening and laboratory precision measurement.