138 PRO is a highly practical and cost-effective MINI handheld oscilloscope launched, which is aimed at the maintenance industry and the education industry.<br> The oscilloscope has a real-time sampling rate of 2.5MS/s and a 200KHz bandwidth.<br> With full trigger function (single, normal, automatic)<br> Works perfectly for both periodic analog signals and aperiodic digital signals.<br> Voltages up to +/- 400V can be measured.<br> Equipped with efficient one-key AUTO, the measured waveform can be displayed without cumbersome adjustment.<br> The display is equipped with a 2.4-inch high-definition LCD screen with a resolution of 320*240.<br> Type: B: Standard without battery<br> Colour: Black<br> Material: Metal+Plastic<br> Package Contents:<br> 1 x 138 PRO Handheld Digital Oscilloscope<br> Only the above package content, other products are not included.<br> 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.