Extech 381395 Dual Channel Datalogging MultiScope 5MHz, Internal or External Triggering, Auto or Manual setup for horizontal and vertical scaling, Single shot mode, Window freeze locks waveform in the display, Roll Mode for slow repetition waveforms, Store and Recall up to 16 waveforms and setups, Sampling Time: 25MS/s Dual Channel; 50MS/s Single Channel, 132 x 128 Pixel Super-Twist two level backlit display, Data Hold and Low Battery indication.