SOUND SIGNALS:
1 The horn sends out signals at long intervals = SAFE REVERSE MOTION
2 The horn sends out signals at short intervals that get stronger when the obstacle
is approaching = PAY ATTENTION
3 The horn sends out signals at extremely short intervals up to a non-stop sound = STOP
DETECTIVE RANGE:
Vertical detective range
BIP
BIP
BIP
150 cm
BIP BIP BIP
100 cm
BIIIP
40 cm
Orizontal detective range
GB