SK-4030是一款由日本凱世（KAISE）生產(chǎn)的高精度臺式數(shù)字萬用表，具有0.1%的測量精度和4行顯示功能。它配備了模擬條10倍放大功能（ZOOM），能夠快速放大測量值，便于觀察微小變化，相當(dāng)于擁有一塊高速、高靈敏度的指針萬用表。此外，SK-4030還具備比較儀功能，用戶可以設(shè)定上限和下限值，當(dāng)測量值超出設(shè)定范圍時，蜂鳴器和LED會同時發(fā)出提示，同時LCD上還會顯示測量值。該萬用表支持直流電壓（0～1000V，分辨率100μV）、交流電壓（0～750V，分辨率100μV）、電流（0～20A，分辨率100nA）和電阻（0～40MΩ，分辨率100mΩ）等多種測量功能。它還具備二極管測試、導(dǎo)通測試、數(shù)據(jù)保持等功能。SK-4030采用1.5V R6P電池和外部AC電源供電，尺寸為80(H)×200(W)×260(D)mm，重量為1360g。其附件包括100-32測試表和6節(jié)1.5V R6P電池。該萬用表適用于工廠的檢查和維修工作，能夠有效提高批量檢測的效率。

The SK-4030 is a high-precision desktop digital multimeter produced by KAISE of Japan, featuring a measurement accuracy of 0.1% and a 4-line display. It is equipped with a 10x zoom function for the analog bar, which allows for rapid magnification of measured values and is particularly useful for observing subtle changes, akin to having a high-speed, high-sensitivity analog multimeter. Additionally, the SK-4030 has a comparator function that enables users to set upper and lower limits. When the measured value exceeds these limits, both a buzzer and LED will provide alerts, and the LCD will display the measured value. The multimeter supports a wide range of measurement functions, including direct current voltage (0–1000V with a resolution of 100μV), alternating current voltage (0–750V with a resolution of 100μV), current (0–20A with a resolution of 100nA), and resistance (0–40MΩ with a resolution of 100mΩ). It also includes functions for diode testing, continuity testing, and data hold. The SK-4030 is powered by a 1.5V R6P battery and an external AC power source, with dimensions of 80(H)×200(W)×260(D)mm and a weight of 1360g. Its accessories include a 100-32 test lead and six 1.5V R6P batteries. This multimeter is well-suited for inspection and maintenance tasks in factories and can significantly enhance the efficiency of batch inspections.