・IP65 waterproof and dustproof design,can withstand a drop of 2 meters ・LPF low-pass filtering for accurate voltage,current and frequency measurements on variable speed motor drive systems and other equipment with high electrical noise ・With built-in thermometer for easy temperature reading,no need to carry another temperature measuring instrument with a resolution of 0.1 ・There is a flashlight on the top of the fuselage,and the screen comes with a backlight,which is good for working in poor lighting areas. ・True RMS AC voltage and current measurement for accurate measurement of nonlinear signals Specifications: ・Materials:ABS + PC ・Display:LCD Display with Backlight,6000 Bit (3 5/6) ・Range Control:Automatic Range ・Screen Size:58 x 42mm ・Duty Cycle:0.1-99.9% ・Frequency Response:45-400Hz ・Dustproof and Waterproof:IP65 ・Sampling Time:About 3 Times/Sec ・Power:1 x 9V 6F22 Battery (battery not included) Package included: ・1 x UNI-T UT191E Portable True RMS/Peak Professional Multimeter Digital Multimeter