Detection
The types of hidden objects and materials that the detector responds to and the maximum depth at which it is able to detect these objects and materials.
The detection depth is a rather conditional parameter, and in fact there are often deviations from the claimed values both in one direction and in the other (depending on the material inside which hidden objects are searched for). As for the detection itself, modern detectors, usually, are able to find not only electrical wiring, but also other metal objects of various compositions ( ferrous
metal and
non-ferrous metal), as well as
wooden structures and
plastic pipes. However, the specific capabilities of the device in each case still do not hurt to clarify separately.
Light indication
The presence in the device
of a light indicator — a pointer that gives a light signal when an object is detected in the depth of the "viewed" material. In addition, the light indicator can also work “at idle” — notifying that the device is turned on, in good working order and ready for operation. Detection signaling can be carried out by turning the indicator on and off, changing its colour or blinking frequency; such an indication is often more convenient and noticeable than the display readings. In fact, light signs are often combined with displays: the indicator provides the most basic notifications, and the screen displays more detailed information.
Measurement accuracy
Measurement accuracy provided by the detector. It is indicated by the error that the device gives; accordingly, the lower the number in this paragraph, the more accurate this model, the smaller the error it gives during measurements. For models that have different accuracy with different materials, the smallest error value is indicated.
In the most advanced instruments, the measurement deviation is only 3 – 4 mm; in the least accurate — up to 13 – 14 mm. Note that high accuracy accordingly affects the price; so when choosing according to this indicator, you should not pursue
maximum accuracy, but soberly assess what error will be permissible during the planned work. Detailed recommendations on the required accuracy for various specific tasks can be found in special sources.
Auto power off
The auto-off time provided in the device.
Many modern wire detectors can automatically turn off after a certain period of inactivity. This saves battery life. The auto-off time is usually a few minutes — most often from 5 to 20.
