Thank you for purchasing our product, I am glad to receive your feedback. I sincerely apologize for the inconvenience this product has caused you.
According to the product manual, the sound is within a reasonable range within 24-51 decibels, and will not disturb people.
If you think the noise is not acceptable, you can record the noise video and send it to our official mailbox Support@okaysou.com. We will receive emails and check product issues as soon as possible. If it is indeed a problem with the product itself, we will contact you and mail a brand new product to you. I sincerely apologize to you again.