Features: Brand new and high quality This is an RS485 device data acquisitor or gateways designed for the industry environment. It combines multi functions in one, including serial server, gateways, MQTT gateways, RS485 to JSON, etc. The module features RS485 and Ethernet port, uses screw terminals for power input. Rail-mount case design, small in size, easy to install. It is suitable for applications like data acquisition, safety and security, and intelligent instrument monitoring. Specifications: Material:Plastic Type:RS485 TO ETH or RS485 TO POE ETH Size:Approx.106x36mm or 4.17x1.41inch Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Industrial Serial Server