Review on Franklin Sensors FS710PROProSensor 710+: Advanced Stud Finder with Level & Ruler - Yellow by Sivabala Mickel

They do not correspond to the advertisement. Maybe it's good for the person who found the carnation to hang the picture. Unfortunately, readings will be wrong if there are other objects behind the drywall, be they wires, pipes, or even insulation, or the lights are simply blinking like a UFO. I work as an electrical contractor and where I need it most accurately and reliably is next to existing sockets, switches and bolts in the immediate vicinity, these are exactly the places where it isn't. Save time and money and buy a simple magnetic hairpin. Viewfinder with built-in spirit level and measuring tape. I returned mine the next day for a refund.