High-end residential access control, press that button is the property.

The words "property" or "customer service". According to relevant information, the access control system of high-grade residential areas will have a special property button for owners or residents to send requests or report problems to the property service center. This button is usually marked with the words "property" or "customer service" and may be located in a conspicuous position on or near the operation panel of the access control machine.