Alinan 6pcs ZMPT101B Voltage Sensor 5-30V Power Supply Single Phase Active Sine Wave Output Variable Transformer Module With Dupont Cable

I hooked this to my scope alongside a probe directly connected to AC (DANGER: Don't attempt this yourself unless you know what you're doing).AC in pink, this board in yellow.As you can see, it appears to introduce a phase lag. It also has a distorted shape. Sadly this makes it useless for my application where I need to measure true power.If you don't care about phase purity or shape, (e.g. you're just interested in relative voltage or frequency) then this should work for you.