The parktronic in Mitsubishi Padero 4 reacts to the approach to the obstacle with the following beep:
Angular sensors:
-Interrupting signal-distance to obstacle between 40 and 50 cm.
-Frequent intermittent signal-25-40 cm distance.
-Continuous signal-less than 25 cm.
Rear transducers in a car without a headlamp:
-Interrupt signal-distance from 80 cm to 150 cm.
-Frequent intermittent signal-40-80 cm range.
-Continuous signal-less than 40 cm.
Back sensors on a car with a porcopic car:
-Interrupting signal-distance from 120 cm to 150 cm.
-Frequent intermittent signal-60-120 cm distance.
-Continuous signal-less than 60 cm.