Does it work with plastered walls. I just bought a different model Zircon, but the fine print they don't recommend it for use on plaster.

Hello. Stud sensors cannot calibrate properly on lath and plaster walls so they are not recommend for these walls. A stud sensor with metal scan is what we recommend. You can locate the studs by finding the nails holding the lath to the studs. Our website has a video under TIP MINUTES that shows the best way to do this. Thank you.