Specifications AC Voltage Range 2 440V 50 60HzAC Voltage Accuracy ± 6 10 Rated Current US Standard 5mA European Standard 30mASocket Rated Voltage US Standard 110V AC European Standard 220 250V ACDC Voltage Range 1 5V 30VLine On Off Detection SupportedUse Battery 2 x AAA 1 5V Batteries not included Socket Polarity Detection SupportedLow Battery Prompt SupportedFlashlight Lighting SupportedAutomatic Shutdown 5 minutes after no operationFeatures 1 Precise Voltage Detection Capable of measuring AC voltage from 2 440V and DC voltage from 1 5V to 30V offering versatile applications for household and industrial use 2 Socket Fault Detection Identifies socket polarity issues and wiring faults efficiently ensuring safer electricity usage and maintenance 3 PortableEasy to Use Pocket sized design with a large LCD screen for clear readability making it user friendly for professionals and DIY enthusiasts 4 Built in Flashlight Comes with a handy flashlight feature to support inspections in dimly lit areas or confined spaces 5 Automatic Shutdown Feature Powers off automatically after 5 minutes of inactivity to conserve battery life and enhance device longevity Package Included 1 x Socket Circuit Analyzer Model VD808 2 x Nib Caps1 x User Manual