NOYAFA MULTI-FUNCTION DIGITAL DETECTOR Stud finder/AC/laser distance meter Everyone loves self-drilling drywall anchors You don't need a drill to install them and they go in quickly and easily. SnapSkruanchors are the ones, however, that lock symmetrically on the wall and ceiling for truly secure fastening Every time you tug on a toilet tissue holder or a towel bar or a window blind, the other self-drilling anchors come out as quickly as they went in, because nothing prevents their sharp threads from cutting back through the drywall as the anchor is rocked in the wall. When activated with a screw, the SnapSkru anchor opens with an audible "pop", locking the anchor on the wall. The drywall gypsum and its paper arekept in compression and thereby immediately reinforced, providing much greater holding power than the other self-drilling anchors that are just a small screw in a large screw. And the SnapSkru anchor's built-in positive stop resists over-drilling Try it for yourself FEATURES Wall Detecting Function: Metal Detection/ Wooden Detection/ AC Power Detection. Metal Detection: Magnetic Metal up to a depth of 120mm (stain , iron), Non-magnetic Metal up to a depth of 100mm (power cable ,copper pipe ). Wood Detection: Detects object such as wood, nail, pipe for wire, etc under the plasterboard, naked wooden floor, or plastic plate. AC power detection: up to a depth of 50mm, AC 90V~250V power supply. Laser Distance Meter Function: measures the length, scale, volume, carry calculations for plus & minus, and times for volume. Detect metal (Stainless steel, copper pipe), power cable, wooden product behind the wall, ceiling, ground floor. Built-in rechargeable lithium battery using supplied USB type C cable to charge. Central marking hole . Self or manual calibration to avoid errors and improve the accuracy. With the 2.4 inch display it is easy to read. Stores up to 50 records of the measuring data. SPECIFICATIONS Function: Laser distance Wall