Sensor detection range

If the sensor detects an anomaly, such as an object that is too close or peripheral to the sensor's range of distance and angle, it will signal an error.
The machine confirms the safety of its surrounding area with several sensors. The machine detects obstacles in a range of about 200Y in front of it; do not go near the machine within the range that is not detectable by the sensors (behind, etc). It may not be able to detect the user as an obstacle.
Low obstacles less than 10 cm (4 inches) in height from the floor cannot be avoided with sensor detection; remove them from the cleaning route beforehand.