The OVP function realized through hardware, which is independent comparing with software control, thus making it can provide more comprehensive and stable protection.
Yes, it can, but auto switch of series and parallel doesn't support and only manual connection is available.
The SK3325J has better measurement resolution, a better display, more communication options and protective function.
The Suin SK3325J is a 3 channel programmable power supply. Two channels output 0-32V / 5A, while the third offers 0-6V / 3A.