According to tests conducted by eufy engineers, the E28 robot emits different noise levels based on different cleaning modes during its cleaning session. Please refer to the following noise levels:

Quiet mode：<55 dB

Turbo mode：<57 dB

Max mode：<62 dB

When running the E28 robot at night, we recommend using Quiet mode to ensure minimal noise disturbance due to its low 55 dB noise level. Additionally, this mode is ideal for quiet environments such as offices, libraries, etc.

• Omni Station Dust Emptying: 75 dB. The level of noise exceeds the robot's three cleaning modes, but it happens less frequently and could be a minor issue for users.

• Self-Drying Roller Mop: 40 dB. The level of noise level is quieter than that of a library environment, ensuring that the drying process is minimally disruptive.

• Self-Washing Roller Mop: 76 dB. The level of noise is due to washing the roller mop, which requires pumping out dirty water; this is reasonable for a cleaning task that requires more power periodically.

• Portable Deep Cleaner (PDC) Operation: 80 dB. The level of noise results from the power needed to enhance the removal of tough stains in various scenarios.

The flexibility of the E28 robot's various cleaning modes allows users to select an appropriate mode based on their specific needs and the desired level of quietness.

If you have any other questions about the E28 robot, please don't hesitate to contact eufy Support Engineers for further assistance.