产品特点：

● 4数字量输入/4继电器modbus以太网I/O
● Supported protocols: Modbus/TCP, TCP/IP, UDP, DHCP, HTTP, MQTT
● Supports RESTful web API in JSON format
● Supports local logging with RTC time stamp
● Supports mobile device web configuration in HTML5
● Supports 10~30 VDC power with reverse protection