SainSmart DSO212 2-CH Handheld Mini Digital Oscilloscope

Brand: SainSmart SKU: 101-10-600 8 reviews SKU: 101-10-600 Variants ID: 32698138689615

DS212 is a 2-channel digital oscilloscope. It is in a new design - two gear for controlling, very convenient for testing. It supports USB flash disk storage and USB charging. It is widely applicable in the academic experiment, electronic maintenance, electronic engineering tasks, etc.

    • New design - two gear for controlling, very convenient for testing.
    • Pocket-size and lightweight.
    • Chargeable lithium battery, 4 hours' working duration.
    • Equipped with a 320*240 color display.

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DSO Series: 

Model DSO Nano (DSO211) DSO Note II (DSO202) DSO 212 DSO Quad (DSO203)
ADC MCU internal ADC MCU internal ADC MCU internal ADC AD9288
Channels Analog channel 1 + 1 internal channel 2 analog 2 analog 2 analog, 2 digital
Analog Bandwidth 200KHz 1MHz 1MHz 8MHz
Max Sample Rate 1MSa/s 10MSa/s 10MSa/s 72MSa/s
Maximum Memory Depth 8K 8K 8K 4K
Horizontal Sensitivity 1uS/Div~2S/Div(1-2-5sequence step) 1uS/Div~2S/Div(1-2-5sequence step) 1uS/Div~2S/Div(1-2-5sequence step) 0.1uS/Div~1S/Div(1-2-5sequence step)
Vertical Sensitivity 20mv/Div~10V/Div(1-2-5sequence step) 20mv/Div~10V/Div(1-2-5sequence step) 20mv/Div~10V/Div(1-2-5sequence step) 50mv/Div~10V/Div(1-2-5sequence step)
Input Resistance 1MΩ 1MΩ 1MΩ 1MΩ
Coupling DC / AC DC / AC DC / AC DC / AC
Calculation Waveforms -A, RecA, A + RecA -A,-B,A+B,A-B RecA,RecB,RecC -A,-B,A+B,A-B RecA,RecB,RecC -A,-B,A+B,A-B RecA,RecB,RecC
Storage  8MB USB flash disk memory  8MB USB flash disk memory  8MB USB flash disk memory  8MB USB flash disk memory
APP Installed 1 2 2 4
Operation buttons button,touch area buttons,scrollers buttons,scrollers
USB Interface Micro USB Micro USB Micro USB Mini USB
Battery 500mAh 500mAh 500mAh 1000mAh
Screen Size 2.8inch 2.8inch 2.8inch 3.0inch
Screen Resolution 320 × 240 320 × 240 320 × 240 400 × 240
Open Source Application layer Open-Source
  • Rising/Falling edge trigger
  • Store file as BMP, DAT, BUF, or CSV format
  • Math waveforms:-A,-B,A+B,A-B,Rec A,RecB,RecC
  • Synchronous mode: Auto, Normal, Single, None, Scan
  • Inbuilt 8MB U disk storage for waveform data and images
  • Modes of vertical precise, horizontal precise measurement and triggering threshold
  • Auto Measurement: frequency, cycle time, duty cycle, DC RMS voltage/Vpp /Vmax/Vmin/Vavg
  • Inbuilt Signal Generator: Sine/Square/Triangle/Sawtooth wave


  • Max sample rate: 10MSa/s
  • Analog bandwidth: 1MHz
  • Max sample memory depth: 8K
  • Analog input impedance: 1MΩ
  • Max input voltage: ±40V(X1 probe)
  • Coupling:AC/DC
  • Vertical sensitivity: 20mv/Div~10V/Div (1-2-5 sequence step)
  • Horizontal sensitivity: 1uS/Div~2S/Div(1-2-5 sequence step)
  • Dimension: 100mm X 56.5mm X 10.7mm
  • Weight: 95g
  • Case side thumbwheel control
  • Screen: 2.8" Full Color TFT LCD Display (320X240 pixels)
  • Recharging through Micro USB port
  • Internal 500mAh Lithium battery
  • Compliant with EU/USA certification CE/FCC


  • 1x DS212 mini oscilloscope
  • 1x combined probe
  • 1x DSO hook
  • 1x Hex key
  • 1x Safety instruction
Customer Reviews
4.1 Based on 8 Reviews
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Canada Canada
Probe connector pin broke

The device works. The day I received the device, I tried testing it. When I connected the probe to the device (straight not slanted), the device was not reading anything and had no idea why it wasn't reading a known signal. Upon inspection, the pin inside of the connector was bent and broken which left me with only the dso probe which the pin was slightly bent before connecting it to the device and was bent back into place when it was connected to the device. The fact that the regular probe broke within the first use was very discouraging and either a sign of poor manufacturing quality or a manufacturers defect.

Gavin L.
Canada Canada
Probe broke

I have just received the device and as soon as I connected the probe to the device input, the probe’s pin bent and broke. So I now need to order another probe. After that, before testing the device and connecting the alternate probe, I inspected the pin of that probe and the pin was slightly bent but when I connected it to the device it worked.

A. Clark
I love this portable oscilloscope

This is a terrific little tool for testing small electronics on the go. It's as long/tall as a credit card, and as wide as a smartphone. The build quality on the unit is solid.I use it for testing/troubleshooting vintage electronics and it does everything my 1970's tek 475 does.The signal generator is a nice bonus feature. The menus are easy to navigate.The downside is that it is only 1mhz. I would pay extra for 25mhz model, for sure. However - I have measured signals up to 3.4 mhz with success.The 1x probe is a little cheap, and the male pin in the BNC connector broke on the first day, but replacement probe are cheap and constructed with far more care.I was skeptical of this device, but after using it for a few weeks, I am very pleased with the unit.

Works well - but not sensitive enough

I can't really complain. This is not a full blown replacement for a table-top device and I knew that before I bought it. Yes, it's way of controlling the different settings is .. well .. unusual but acceptable. It's small, but the screen is well readable. I am using it for audio device repairs and that works quite well. HOWEVER: It's not very sensitive and unable to reliably read signals as low as -50db (3 mV RMS, 8 mV p-p). So you might not be able to read the signal coming from your turntable cartridge. I am using a step-up-transformer to read very low signals, but YMMW.

Cutest little o scope

This tiny O-scope is handy if you have a portable bench. To get more use out of it I recommend adding some velcro to keep it held in a larger travel case. It's so small that it slides around when you move the probes. I got the two channel model, which I recommend.

W. Wagner

The first one received quit working after about two hours and was promptly replaced with a new DSO. Good customer service!!! The scope has lots of nice features that are mainly found in bench type scopes. I use it for audio performance test and it works great. It would be easier to work with if the probes used BNC as the small jacks tend to slip out. The thumb wheels work ok but its hard to push the switch without turning the wheel. I would buy it again.

Amazon C.
Very handy and easy to use

I haven't used an oscilloscope in many years, and then only sparingly, but I was able to hook this up and diagnose a problem with a circuit in just a few minutes. The menus are pretty easy to navigate, and they're not too hard to understand despite the shorthand labeling (the thing is tiny, after all - not much room to give descriptive menus). The probe that came with it is functional but doesn't seem too solid. We'll see how long it lasts.

Good first oscilloscope

This is my first oscilloscope so I can't compare it to others, but it certainly seems to provide very good value for your money. It is very easy to use. The traces seem to be accurate. You can store images and download them. It lasts a long time on a battery charge, or you can leave the USB plugged in. The function generator is useful though you can't adjust the amplitude. There was a problem with my first one (it couldn't connect to any of serveral Windows computers I tried). Sainsmart customer support was excellent-- they sent me a new device that works flawlessly.