main features：

With fast development of measurement tools, many electrical appliances, home appliances, and devices are controlled by single-chip microcomputers, and the frequency of signals is getting higher.
On-site maintenance requires a handled oscilloscope which is portable and high bandwidth. ET521S with Color display, 50M waveform , excellent function with reasonable price.

main features：

ET310A is the perfect combination of the 80M sampling rate 20MHz bandwidth Oscilloscope & auto-range TRMS multimeter! Uniquely, it can easily connect with computer to deal with the measuring datas and waveforms on large screen!

main features：

?Automatic waveform capture function
?Software calibration technology, memory calibration coefficients
?128X64 high contrast LCD with LED back lighting.
?Built-in 500V / 20A explosion proof fuse.
?10 waveform and 100 data storage

main features：

ET310B is the perfect combination of the auto-range TRMS digital multimeter & 80M sampling 20MHz bandwidth digital Oscilloscope! Uniquely, it adopts the bluetooth wireless extended design which enables users easily deal with the measuring datas and waveforms on Android phone and tablets!