Its quality is usable._The reason why it got 2 stars from me is because it doesnt have huge shortcomings._1. The USB is only for charging, not for data connection, in other words, you can forget about the firmware update._2. There is no baxseline zeroing in oscilloscope mode._In other words, the DC offset must be taken into account and corrected by yourself._I bought two devices, one with -900mA and the other with -1.5A negative DC offset._3. What I think is its biggest shortcoming is that it does not have Single and normal triggers. And since you cant update the firmware, you can forget about it.__The accuracy of the DC is good, the part of the multimeter is of the usual good quality from Owon._The display is clearly visible, but the surface of the oscilloscope is smaller compared to the HDS120, the height is the same, but the width is almost half._The shortcomings of the HDS120 can also be discovered here.

Its quality is usable. The reason why it got 2 stars from me is because it doesn't have huge shortcomings. 1. The USB is only for charging, not for data connection, in other words, you can forget about the firmware update. 2. There is no baseline zeroing in oscilloscope mode. In other words, the DC offset must be taken into account and corrected by yourself. I bought two devices, one with -900mA and the other with -1.5A negative DC offset. 3. What I think is its biggest shortcoming is that it does not have Single and normal triggers. And since you can't update the firmware, you can forget about it. The accuracy of the DC is good, the part of the multimeter is of the usual good quality from Owon. The display is clearly visible, but the surface of the oscilloscope is smaller compared to the HDS120, the height is the same, but the width is almost half. The shortcomings of the HDS120 can also be discovered here.

Its quality is usable._The reason why it got 2 stars from me is because it doesnt have huge shortcomings._1. The USB is only for charging, not for data connection, in other words, you can forget about the firmware update._2. There is no baxseline zeroing in oscilloscope mode._In other words, the DC offset must be taken into account and corrected by yourself._I bought two devices, one with -900mA and the other with -1.5A negative DC offset._3. What I think is its biggest shortcoming is that it does not have Single and normal triggers. And since you cant update the firmware, you can forget about it.__The accuracy of the DC is good, the part of the multimeter is of the usual good quality from Owon._The display is clearly visible, but the surface of the oscilloscope is smaller compared to the HDS120, the height is the same, but the width is almost half._The shortcomings of the HDS120 can also be discovered here.

am thoroughly impressed with the OWON CMS101 after testing it on my repair bench. This 3-in-1 tool is a lifesaver for anyone working on switch-mode power supplies (SMPS) and automotive electronics. The biggest advantage is that it is fully isolated (floating),allowing me to safely measure the hot side of power supplies with regular multimeter leads without any risk of short circuits. The auto-trigger is incredibly stable,locking onto waveforms immediately. It measures DC ripple perfectly and stays highly accurate up to 400 kHz,which is more than enough for most switching frequencies and audio gear. Excellent value for money,fast tax-free shipping,and highly recommended for both professional technicians and advanced hobbyists! 5 stars!__

am thoroughly impressed with the OWON CMS101 after testing it on my repair bench. This 3-in-1 tool is a lifesaver for anyone working on switch-mode power supplies (SMPS) and automotive electronics. The biggest advantage is that it is fully isolated (floating), allowing me to safely measure the hot side of power supplies with regular multimeter leads without any risk of short circuits. The auto-trigger is incredibly stable, locking onto waveforms immediately. It measures DC ripple perfectly and stays highly accurate up to 400 kHz, which is more than enough for most switching frequencies and audio gear. Excellent value for money, fast tax-free shipping, and highly recommended for both professional technicians and advanced hobbyists! 5 stars!

am thoroughly impressed with the OWON CMS101 after testing it on my repair bench. This 3-in-1 tool is a lifesaver for anyone working on switch-mode power supplies (SMPS) and automotive electronics. The biggest advantage is that it is fully isolated (floating),allowing me to safely measure the hot side of power supplies with regular multimeter leads without any risk of short circuits. The auto-trigger is incredibly stable,locking onto waveforms immediately. It measures DC ripple perfectly and stays highly accurate up to 400 kHz,which is more than enough for most switching frequencies and audio gear. Excellent value for money,fast tax-free shipping,and highly recommended for both professional technicians and advanced hobbyists! 5 stars!__