Are motorized mounts noisy when extending or retracting?

Reviewers are split. Several r/hometheater and retailer comments describe the motors as smooth and quiet, while others — including a frequently cited Amazon comment about the Monoprice mount beeping on retraction — flag audible motor whine or beep tones. A Walmart verified-purchase reviewer of the VIVO ceiling flip-down specifically called out a faint high-pitched sound during travel. Expect some noise; how much you'll tolerate is personal.