Protoss-PE11-M is RS485 to Ethernet server,no wifi,power input 9V to 48VDC;Protoss-PE11-H is RS485 to Ethernet server,no wifi,power input 100V to240VAC;Protoss-PW11-M is RS485 to wifi server function,no RJ45 Ethernet,power input 9V to 48VDC;Protoss-PW11-H is RS485 to wifi server function,no RJ45 Ethernet,power input 100V to240VAC;Cortex-M3 MCU with 2MB Flash and 128KB SRAMUse FreeRTOS Operation SystemSupport TCP/UDP/MQTT/HTTP/WebSocket ProtocolSupport Modbus TCP to RTU,Modbus Master FunctionSupport RS485 To 10/100M Ethernet Conversion,Serial Speed Up to 460800 Support 10/100M Ethernet Auto-NegotiationSupport Webpage Easy Configuration or PC IOTService ToolSupport Security Protocol Such As AES/DES3Support and Resister Packet FunctionSupport Webpage OTA Wireless UpgradeSupport Industrial Temperature: -40 to +85 CMultiple Type of Different Power Input:Protoss-PE11-H:100~240VAC@50~60HzProtoss-PE11-M:9~48VDC@1ASize: 97.60 x 64.95 x 27.50 mm (L x W x H) ,C45 rail installationColour:As shownMaterial:plasticPackage Contents:1 x PW11-M RS485 to WIFI serial serverOnly the above package content,other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.