RADARCAN R-301 Manual De Usuario página 8

Human
Mosquitos
Flies
Cockroaches
Rodents
Table of frequencies within the human hearing range between
20 Hz y 20 Khz, compared with the approximate hearing range
of different animals and insects.
The ultrasound waves fan out uni-directionally from the
RODENTS | COCKROACHES | BATS REPELLER PRO like
fluorescent light. Hard materials (walls, ceilings, furniture,
glass, etc.) promote better spreading out of the sound
waves, as they bounce off these surfaces, whereas soft
materials (cardboard, curtains, carpets, etc.) absorb them.
Remember, when installing the RODENTS | COCKROACHES
| BATS REPELLER PRO, that ultrasound waves do not
penetrate walls (brick, plaster, etc.), or wooden room
Audible Ultrasound