/diy/ - Do It Yourself

visiting /o/tist here
are there any good and affordable instruments for measuring current and voltage over longer time periods
perfect would be a stand alone device with multiple input channels and clamps for current measurement so i don't have to cut into the wiring
smart phone connectivity would be great for a quick overview and .csv exports for detailed analysis
basically pic related but in one box
don't need extreme precision and willing to spend a few hundred but not thousands on lab grade stuff