A digital ammeter is an instrument that measures the flow of an electrical current in a circuit. The measurements are given in amperes, the unit for measuring electrical current. ... PDUs with digital ammeter displays report the aggregate current load on the device. This load reading is displayed in real-time. https://youtu.be/gfQczRKFeqE Features: This Amp Meter is a digital panel amp meter that provides a more effective way of monitoring, measuring, and displaying current. This amp meter has been specifically designed for panel mounting. This meter shows ampere with the current transformer (CT). It is more accurate than an analog ampere meter. Specifications: Model: NT-48S Product: digital ampere meter Brand: im(site) Made: china Display size: 96mm*48mm Supply voltage: 110vAC/220vAC Current transformer required: yes Maximum ampere range: 999A It eliminates human reading errors.