Professional detector of wires, profiles and a moisture meter in one. YT-73138 allows to detect in walls or drywall:

live wires up to 50 mm
ferromagnetic metals up to 120 mm
non-ferrous metals (e.g. copper tubing) up to 80 mm
wooden elements of the structure precisely up to 20 mm, coarse up to 38 mm
The built-in wood and building material moisture meter allows you to:
performing measurements to a depth of up to 8 mm
wood moisture measurement in the range of 5-50%
measurement of building materials moisture in the range of 1.5-33%
The use of a YATO YT-73138 detector and 4-in-1 meter significantly speeds up work, increases safety and minimizes the risk of accidental damage to the electrical or hydraulic installation located under the plaster. Thanks to it you can, among others safely drill a hole or find a place to screw a screw into a wooden or metal profile hidden under a drywall. Built-in humidity meter will allow, among others determining the level of plaster moisture in thermal bridges, as well as checking the humidity for wood intended for fuel.

A large and legible display with LED backlight informs us about:

selected function
signal strength [%]
distance from the searched metal element [cm]
centric location in relation to the sensor
Additional functions and equipment elements:

an acoustic signal and three signaling diodes, green / orange / red, which additionally indicate the detection of the searched material.
adjustment of the detection force for live conductors and metal elements
automatic shutdown after 5 minutes of inactivity
on the underside of the detector there are inserts made of soft material, which protect the housing against scratching during contact with the surface.
device cover made of durable material
Parameters
Metal Detection: Yes
Detection of wooden profiles: Yes
Live wire detection: Yes
Detection depth of wooden profiles: 38 mm
Detection depth of live conductors: 50 mm
Detection depth for non-ferrous metals: 80 mm
Detection depth for ferromagnetic metals: 120 mm