[Multifunctional Clamp Meter] This digital clamp meter multimeter is designed for automatic identification and measurement of AC/DCcurrent, AC/DCvoltage, and resistance. And the AC and DCcurrents can also be manually switched. Support DCcurrent manual zeroing mode. With on/off buzzer, buzzer alarm, livewire firewire identification, automatic shut down and V-alert detection functions. It has 4000 counts True-RMS measurement function for accurate measurements on nonlinear loads [Digital Backlit Display] It has a high bright digital backlit display, so you can read the data clearly when working in dim or low-light conditions, like electrical closets, under buildings, behind appliances, and in other enclosed spaces [Data Retention] Press to hold the measured data, so that users can record or view measurement results without worrying that values will be lost due to changes in the measurement process. It provides greater flexibility and convenience, enabling users to better process and analyse measurement data [Opening Jaw Design] Normal open jaw design, with high reliability and efficiency, easy to cope with the inverter / convergence box / wiring dense and narrow space test, practical for electrical equipment testing and maintenance [Wide Applications] A perfect troubleshooting tool that will help you solve electrical problems in the car, industrial or at home quickly and safely. Widely used in electric power, communication, railway, construction, oil field, metering, scientific research and teaching, industrial and mining enterprises, etc. Specifications: DC voltage: Range: 0~610V, resolution: 0.001V (accuracy ±(0.8%+3)) AC voltage: Range: 0~610V, resolution: 0.001V (accuracy ±(1.0%+3)) DC current: Range: 1~100A, resolution: 0.1A (accuracy ±(2.5%+5)) AC current: Range: 1~100A, resolution: 0.1A (accuracy ±(2.5%+5)) Resistance: 0.1Ω~40MΩ, resolution: 0.1Ω (accuracy ±(1.2%+3)) Buzzer on/off: When the measured resistance is Automatic shutdown: 15 minutes Battery: 400mAh/3.7V