Works perfectly for both periodic analog signals and aperiodic digital signals. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The oscilloscope has a real-time sampling rate of 2.5MS/s and a 200KHz bandwidth. 138Pro Handheld Digital Oscilloscope Kit, 2.5MSa/s 200KHz DSO FNIRSI-150 Numérique De Poche Pocket Oscilloscope Kit 1MSa/s 200KHz Analogiq Plauauyt Equipped with efficient one-key AUTO, the measured waveform can be displayed without cumbersome adjustment. Purchase now with Free Shipping and COD option. The display is equipped with a 2.4-inch high-definition LCD screen with a resolution of 320*240.Type: B: Standard profile without batteryColour: BlackMaterial: Metal+PlasticPackage Contents:1 x 138 PRO Handheld Digital OscilloscopeOnly the above package content, other are not included. With full trigger function (single, normal, automatic)