The Lascells Digital Ammeter features robust ABS and PVC cases, a 50-minute auto-off function, and an LED battery indicator. Powered by a 9V PP3 battery, it offers a range of 0 to ±10A D.C., 0.01A resolution, ±2% accuracy, and 0.01? input impedance. The voltmeter ranges from 0 to ±20V D.C. with similar accuracy and resolution.