The NJJ-95B is the latest upgraded version of the highly reputable
NJJ-95A "Handy Search" Reinforced Concrete Radar.
The NJJ-95B can sense the depth of up to 30 cm; 10 cm deeper
than the conventional device. This device radiates electromagnetic waves through a concrete surface and receives reflected signals from
objects such as reinforcing rebar steel bars, cavities, or other objects that have different electrical characteristics from
concrete. Object location and depth are then displayed and recorded as image data.