Voltcraft-USB (Universal Serial Bus)-2-Channel-oscilloscope-attachment-Voltcraft-DSO-1082-USB (Universal Serial Bus)-P-The-Voltcraft-DSO-2150AL-oscilloscope-is-small-lightweight-&-requires-no-external-power-The-oscilloscope-is-ideal-for-production-test-research-&-design-&-all-of-the-applications-involving-analogue-circuits-test-&-troubleshooting-as-well-as-education-&-training-P-P-The-oscilloscope-is-intended-for-use-in-combination-with-a-Windows-based-computer-with-two-USB (Universal Serial Bus)-2-0-interfaces-It-operates-as-a-fully-digi