138 PRO is a highly practical and cost-effective MINI handheld oscilloscope launched, which is aimed at the maintenance industry and the education industry.The oscilloscope has a real-time sampling rate of 2.5MS/s and a 200KHz bandwidth.With full trigger function (single, normal, automatic)Works perfectly for both periodic analog signals and aperiodic digital signals.Voltages up to +/- 400V can be measured.Equipped with efficient one-key AUTO, the measured waveform can be displayed without cumbersome adjustment.The display is equipped with a 2.4-inch high-definition LCD screen with a resolution of 320*240.Type: B: Standard without batteryColour: BlackMaterial: Metal+PlasticPackage Contents:1 x 138 PRO Handheld Digital OscilloscopeOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.