Directly measuring voltages and resistance, not need to frequently switches gears, improving work efficiency → suitable for maintenance engineers to quickly in complex environment High sensitivity NCV function, safe measurement of live lines, effectively reduces the risk of electric shock and protects the personals of users → suitable for inspection by electricians to ensures operational Capable of measuring voltages within a frequency ranges of 40Hz~1kHz, meets the testing needs of various electrical equipment → suitable for professional electricians to use in different environment 380V phase loss detection function to ensures electrical, provide power to avoid equipment damage → suitable for industrial electrical maintenance and repair Automatic recognition of voltages / resistance, tested immediately upon startup, Novice users do not need to learn the curves and can use immediately → Suitable for home electricians and enthusiasts