Question about iRobot Roomba Combo Essential

But you have the option of planning a weekly schedule, for me it always runs when I'm not at home. :)

Hello Karin
The volume of the signals emitted by the Roomba Essential cannot be adjusted softer/louder, sorry.
Best regards,
Your iRobot Team

If you put it on low speed, it's quieter, otherwise it sounds like a small hoover.