The Voltage Tester (Sorting) Instrument is a battery-powered, microcontroller-controlled portable testing device, compact and easy to carry. It features upper and lower voltage limit settings with automatic judgment functionality, and its negative voltage alarm function can also be used for reverse polarity testing of batteries.

Equipped with intelligent judgment capabilities, the Voltage Tester (Sorting) Instrument eliminates human error and is used for open-circuit voltage testing and sorting of batteries.