Roborock Customer Service Center - Technical Support
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is provided with short circuit and current leakage protection features such that it can be
automatically powered off in abnormal situations.
22. Q: What's the red flashing light when looking at the laser distance sensor (LDS) with the
naked eye, and is it harmful to my eyes?
A: The red light is the ranging laser emitted from the LDS and is certified in accordance with
IEC 60825-1:2014 laser safety Class 1. Please rest assured that the emitted laser power
dissipation is from a safe internal laser and is too low to be harmful to children or pets.
23. Q: Why does the robotic vacuum cleaner not clean some areas (for example, a 2 mm
balcony with black floor is neglected)?
A: 1. Dark floors and dark rugs have light-absorbing properties. The machine will mistake these
areas as steep drops, and thereby avoid cleaning them.
2. If there is dust on the cliff sensor, the cliff sensor may be wrongly triggered for non-dark floors.
Please use soft and dry cloth to carefully clean the four cliff sensors on the bottom of the
machine and then try again.
3. Some places may be missed if the wall sensor is dirty. Please clean the wall sensor on the
right of the machine.
24. Q: What is the ambient noise level of the robotic vacuum cleaner (in decibels)? (Updated
on March 27, 2019)
A: In our professional laboratory, we measured the sound pressure level to test the noise level
from a meter above ground. The ambient noise level ranges between 53dB to 61dB from Silent
mode to Max mode. Specific noise levels may vary with each machine.
25. Q: How long does it take for the robotic vacuum cleaner to charge?
A: It takes about 220 minutes to charge from 0% to 100%, and 180 minutes to charge from 20%
to 80%.
26. Q: Will tire tracks be left on the floor? (Updated on March 22, 2019)
A: The tires of the robotic vacuum cleaner are made of flexible materials and the bottom of the
