Features: 1.Live zero fire wire judgment to find wiring detection: Live mode, the line zero line and fire line distinction, installation and wiring at a glance fire alarm, zero line is no reaction 2. Flip large screen random strain: 180 adjustment of the appropriate angle of measurement, the work is convenient to carry and placement 3.NCV non-contact voltage detection: switch to the NCV function display EF, with the left side of the instrument bottom NCV sensing part of the detection of AC voltage, the instrument issued a beep alarm at the same time as the LCD analog bar will display the sensing intensity 4. USB lithium battery direct charging plug and play: built-in 3.7V/1800mAh lithium battery, connecting Type-C USB lithium battery direct charging is convenient and fast. 5. Wide range of application scenarios: multi-scenario use, engineering operations, machinery maintenance can be easily dealt with. Parameter: Automatic selection of the measurement range Full range overload protection Maximum permissible voltage between the measuring end and the ground is 1000V DC or 750V AC. Working height: Maximum 2000m Display: Liquid crystal display Maximum display value: 19999 digits Polarity indication: Automatic indication, - indicates negative polarity. Over-range indication: OL or -OL Sampling time approx.: 2 times per second Unit display: with function to display power unit Auto power off time: approx. 15 minutes Power supply: 3.7V/1800mAh lithium battery Interface: Type-C Temperature coefficient: less than 0.1 times the accuracy/C Operating temperature: 0-40 Storage temperature: -20-60