•RS485 interface (later supporting CAN interface), using isolation circuit to connect to the elevator motherboard, realizing the output of elevator IoT information to the monitoring center or elevator manufacturer backend.

•Network interface, providing 1 RJ45 or industrial terminal interface or BNC interface (according to on-site needs): Unique Ethernet extension technology, with a transmission distance of 500 meters (100M) on Category 5 unshielded Ethernet cables, and a maximum distance of 1000 meters (10M). Transmission over dual core lines (RVV line 300 meters, 10M), and coaxial cable transmission over a distance of 1800 meters (75-5 lines, 100M bandwidth).

•1 fiber optic port: multimode SC/ST fiber optic port, single-mode SC/FC fiber optic port, single-mode fiber optic transmitter transmission distance can reach tens of kilometers

•Implementation method: Connect with the four-way intercom inside the elevator, and enable two-way communication with the monitoring center host through the local area network; Linked with IP cameras through an IP five party intercom gateway and designated IP cameras, video viewing of the elevator car's condition can be achieved during communication.