Model GE1521 is a medium bandwidth, high impedance 1x/10x switchable voltage probe with 10 MΩ input impedance (10x position). The GE Series is a high quality, easy to use family of 5 mm Passive Voltage Oscilloscope probes in stylish, slim-line bodies. The series features superior input impedances for enhanced measurement performance when compared to other oscilloscope probes. The series is marketed under the time-honored Elditest brand name in both North America and the European Union.