1. This handheld is a portable tool for waveform measurement. In contrast with analog oscilloscope desktop digital oscilloscope or digital multimeter.This multi- station own 2 universal test instrument functions: Oscilloscope + Multimeter. 2. It can quickly and accurately detect the faults of the circuit under test and can as an electronic engineers' assistant is outgoing right-hand product for engineers features are compactness beautiful appearance and clear interfaces. 3. It has three trigger modes: Auto Normal and Single.You can lock and save the waveform of a non-periodic signal. Its multimeter part uses a dedicated chip (6000-count) which can provide a higher precision. 4. ET827 can directly measure high and low voltage signals the highest measurement signal is 2400Vp-p traditional oscilloscope can only measure low voltage signal up to 300Vp-p 40MHz Bandwidth and 200MHz real time sampling rate oscilloscope Multimeter and Oscilloscope Automatic measurement: tool and essential for test newbie. functions: true RMS AC/ AC/DC current resistance capacitance frequency duty cycle diode/on-off test transistor temperature; maximum/minimum value displayed at the same time. Trigger Mode: Auto/Normal/Single. Automatic Measurement: VPP Vmax Vmin Vavg Vrms Frequency. Manual shutdown or automatic shutdown is optional. ET827 can store 100 sets of data and 30 sets of data.The storage location can be arbitrarily so that users can store important waveforms in their desired location for viewing. The measurement waveform signal is very fast.Just press the AUTO button to display a perfect waveform. he secondary display will display Vpp Vaug Vrms at the same time.No need to adjust the signal period amplitude first like a traditional oscilloscope size: about 16 x 8.3x 3.2cm Material: ABS colour: As Shown Package Contents: 1 x E827 2 in 1 Digital Multimeter Oscilloscope(3XAA battery not included) 1 x test pen 1 x portable bag 1 x temperature probe 1 x English instructions Only the above package content other products are not included. Note: Light reflection 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.