Bests & Worsts Reviews from Amazon

I couldn't count the number of stud sensors I've used over the years but none comes close to the ProSensor 710. There is a row of 13 sensors. When the device is placed or moves over a stud, 3 LED's will light (2x4) showing exactly where the stud is. 7 LED's showed me where I had a 2x4 laid flat behind drywall. When you drive a screw into a wall, you can be confident it's in the center. Update.......August 22, 2016... after continual use for over 4 years it started giving odd readings after a drop from the ladder. I was trying to locate ceiling joist over a stippled ceiling. After a frustrating morning with an expensive replacement and then a borrowed Zircon, I ordered a new ProSensor from Amazon. It arrived in ONE day! The stippled ceiling really showed the superiority performance of the ProSensor to the competition.