NF-518
Multifunctional Wall Detector
User manual
Please read the manual carefully before use
VER：V1
Welcome to use the multi-function measuring instrument. Please be
sure to read this manual and operating instructions in detail, and be able
to operate in accordance with manual method , so that the best functions
of the instrument can be exerted. Please keep the operating manual
properly.
This instrument can detect metals (rebars, copper pipes) hidden in
walls, ceilings and floors, live wires, Rib and Slot position under wooden
walls, etc. It is widely used in interior decoration, home installation and
other industries, allowing various construction safely proceed.
(1) Safety Warning
1. Before using this product, please be sure to carefully read all the
safety matters and operating instructions . Failure to follow these
safety matters and operating instructions may result in laser radiation
injury, electric shock, or personal injury.
2. To repair the instrument without authorization, if the instrument is
damaged, please contact your local dealer.
3. Electromagnetic radiation may cause interference to other equipment
and devices. (Such as: pacemakers or hearing aids and other
medical devices).
4.Please dispose of discarded instruments in accordance with your local
laws and regulations.
Do not use this instrument in a flammable or explosive environment.
Do not use this instrument near medical equipment.
Do not use this instrument on airplane.
( 2) Product overview
( 3 ) Button and function description
AC detection mode
Sound/Minus
Power/Back
Type-C charging port
Metal detection
mode/Confirm
Wooden wall
detection mode
Set/Add
HD color screen
Voice broadcast
Marking hole
PU pad
Wall detecting port
( 4 ) Description of Ul and icon
Metal
Electricity
Voice indicator
Target distance
Detection result
Signal strength
Center instruction
Detection mode
Wooden wall detection mode
Metal detection mode
AC detection mode
Non-magnetic metal
Magnetic metal
AC wire
Slot
Rib
1 2
Note: The human body is a conductor, and touching the detection area with your hands
will affect the detection depth of the instrument.For the best detection effect, please
use the instrument according to the schematic diagram
( 5 ) Operating instructions
Boot into metal detection mode by default. In the non-metal
detection mode, short press the to enter the metal detection
mode; it has the functions of locating metal, depth indication, and
identifying metal properties. It is used to detect magnetic and non-
magnetic metal, and not affected by the characteristics of the wall.
1. Power
Power on, when the instrument is off, press and hold for
1 second to power on.
Power off, when the instrument is turned on, press and
hold for 1 second to turn off.
2. Metal detection mode
Step 1: Properly hold the instrument close to the area to be measured,
and move the instrument slowly in the area to be measured. When the
instrument detects a magnetic metal or non-magnetic metal, the
screen displays "metal", attribute icon, strength of the received signal,
and target metal distance instrument depth information. When the
sound is on, the instrument will make a “di” sound after it shows
“metal”. The closer the detected target metal is to the instrument, the
stronger the signal, and the more rapid of the sound.
Step 2: Center judgment. Move the instrument slowly, when the
signal is stronger, it means the detected target metal is closer to the
sensing area of the instrument. When the signal reaches a certain
intensity or the strongest, the center mark of the screen base lights
up, and the target metal is positioned below the sensing area of the
instrument.
*After detecting the metal, you can also move slowly through
different directions and use the signal bar to become stronger to
weaker to stronger to locate the target metal position.
In the non-AC detection mode, short press the to enter the AC
detection mode. This mode is only suitable for scanning live wires.
3. AC detection mode
3
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