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.