• Serial Port: Supports 1 bidirectional serial port, switchable between RS232/RS485; • Display: 4.0-inch screen with 480RGB*480 resolution and 500:1 contrast ratio; • Power Control: Supports 2-channel relay for power control. Operating Limits: 3A/250VAC, 3A/30VDC; • Network Port: 10/100M Ethernet port, supporting PoE (Power over Ethernet) input; • RTC (Real-Time Clock): Supports clock memory function; • Buzzer: Supports key press sounds and can be invoked via programming; • Supports custom standby screen setting and reduces screen brightness in standby mode; • Supports graphical logic programming, programming-free operation, and LUA language coding, meeting the needs of different users; • Multiple Communication Protocols: Supports Serial Port, ModBus, TCP Server/Client, UDP, HTTP, Wake-on-LAN (WoL), PJLINK, and Websocket; expandable with Zigbee and KNX communication; • Supports computer wake-on-LAN, remote shutdown, PPT control, system function calls, Unity3D application control, and exhibition hall playback control; ★ Built-in Huawei video terminal API interface: Realizes control easily with just one function and supports message callback; • Bidirectional Communication: Dynamically displays device status through simple programming; ★ Supports setting text boxes as reserved values during interface editing to display date, time, day of the week, battery level, and network connection status;