This is a third-party accessory featuring a built-in AP hotspot, wireless IEEE 802.11 b/g/n connectivity, Micro-USB, and a relay dry contact. It is designed to work seamlessly with automatic door controllers. The robot communicates with the access control module via wireless signals. Both the Label and Laser robots, including T5, T8, and W3, can utilize this accessory to facilitate smooth passage through automatic doors.