Fangrui Product Details 1. This Is An Rs232/485/422 Device Data Collector/internet Of Things Gateway Specially Designed For Industrial Environment Applications. It Combines Serial Server, Modbus Gateway, Mqtt Gateway, Rs485 To Json And Other Functions. 2. Ethernet Interface With Rs232/485/422 And Poe Function 3. The Power Interface With An Outer Diameter Of 5.5mm And An Inner Diameter Of 21mm Is Used To Connect With The Terminal Type Power Supply 4. Rail Type Housing Design, Small Size, Convenient Installation, Cost-effective 5. It Is Applicable To Data Acquisition, Internet Of Things Gateway, Security Internet Of Things, Intelligent Instrument Monitoring And Other Fields. Model: Rs232/485/422 To Poe Eth (b) Multiple Interfaces+poe Network Interface+electrical Isolation Version Product Type: Serial Port Server, Modbus Gateway, Mqtt Gateway Basic Function: Realize Two-way Parent Mission Function From Rs232/485/422 To Ethernet Communication Interface: Rs232 X 1; Rs485 X 1; Rs422 X 1; Internet Port X One Power Supply Mode: Dc 5