# Serial Server Dinrail 4G MQTT Gateway > Industrial IoT | IIoTSys --- ## Pages - [AI Data Center](https://www.iiotsys.net/ai-data-center/) - [Refund and Returns Policy](https://www.iiotsys.net/refund_returns/): At IIoTSys, we are committed to ensuring your satisfaction with our industrial smart IoT products. Our Refund and Returns Policy... - [Terms and Conditions](https://www.iiotsys.net/terms-and-conditions/): Welcome to IIoTSys, an online shop specializing in industrial smart IoT products. By accessing or using our website (www. iiotsys.... - [Technologies](https://iiotsys.net/technologies/): Technologies ... - [Solutions](https://iiotsys.net/solutions/): Solutions Solar Power Inverters Factory Automation Data Center Sensor Data Collection - [About us](https://www.iiotsys.net/about-us/): Towards to the Smart IoT World About us IIoTSys is a dedicated Industrial IoT Online Shop, serving as a one-stop... - [Privacy Policy](https://www.iiotsys.net/privacy-policy/): IIoTSys is your one-stop Industrial IoT online shop offering innovative solutions like serial servers, PLCs, gateways, networking and smart sensors in solar power inverters, data center, factory automation, sensor data collection. We provide professional support, fast shipping, and secure payments for all your IIoT needs. - [Contact us](https://www.iiotsys.net/contact-us/): Contact us AddressABOSPAR LIMITED71-75 Shelton Street Covent GardenWC2H 9JQ LondonUnited KingdomEmailinfo@iiotsys. net Let us know your requirements Feel free to... - [Home](https://www.iiotsys.net/): Towards to the Smart IoT World Innovative Industrial IoT One-stop Marketplace Fast Shipping Professional Support Safety Payment Cost-effective Catalogues RS485/232... --- ## Posts - [Understanding Industrial IoT](https://www.iiotsys.net/understanding-industrial-iot/): What is Industrial IoT? Industrial Internet of Things (IIoT) refers to the integration of interconnected sensors, devices, and systems in... - [Why Solar Power Inverters Need Smart IoT Monitoring Devices](https://www.iiotsys.net/why-solar-power-inverters-need-smart-iot-monitoring-devices/): Smart IoT converter for Solar power inverter Solar power inverters are the heart of any solar energy system, converting DC... - [MQTT and IIoT in the Modern Factory](https://www.iiotsys.net/mqtt-and-iiot-in-the-modern-factory/): MQTT and IIoT: Powering the Modern Factory The Industrial Internet of Things (IIoT) is revolutionizing manufacturing by enabling seamless connectivity,... --- ## Products - [DIN-rail 2-Ports RS485 Repeater Lightning Surge Isolator](https://www.iiotsys.net/product/din-rail-2-ports-rs485-repeater-lightning-surge-isolator/): Suppress lightning and ESD 600W Lightning surge protection power TVS, protect the circuit from damage 2500V rms isolation voltage, built-in... - [DIN-rail RS232 RS485 LoRaWAN Serial Converter Serial Server](https://www.iiotsys.net/product/din-rail-rs232-rs485-lorawan-dtu-serial-converter-serial-server/): DIN-rail RS232 RS485 LoRaWAN DTU Serial Converter Serial Server - [DIN-rail LoRaWAN 4G LTE WiFi Ethernet Gateway](https://www.iiotsys.net/product/din-rail-lorawan-4g-lte-wifi-ethernet-gateway/): DIN-rail LoRaWAN 4G LTE WiFi Ethernet Gateway - [Metal RS232 RS485 LoRaWAN Serial Converter Serial Server](https://www.iiotsys.net/product/metal-rs232-rs485-lorawan-serial-server/): Metal RS232 RS485 LoRaWAN DTU Serial Converter Serial Server - [DIN-rail RS485 2.4 & 5GHz WiFi Serial Converter Serial Server](https://www.iiotsys.net/product/din-rail-rs485-2-4-5ghz-wifi-serial-server/): Support 802. 11 a/b/g/n wireless standard, support 2. 4GHz and 5GHz dual band operation Support STA/AP/AP+STA Mode Support SmartLink V8... - [Mini RS485 2.4/5GHz WiFi Serial Converter Serial Server](https://www.iiotsys.net/product/mini-rs485-2-4-5ghz-wifi-serial-server/): Supports 802. 11 a/b/g/n Wireless Standard, Supports dual Frequency Operation at 2. 4GHz and 5GHz Support TCP/UDP/Telnet /Modbus TCP Protocol... - [Mini RS485 WiFi Bluetooth Converter Serial Server](https://www.iiotsys.net/product/mini-rs485-wifi-bluetooth-serial-server/): Support for the 802. 11b/g/n and BLE 5. 0 wireless standard Support for Bluetooth mode SmartBLELink distribution network Support TCP... - [Mini RS232 Ethernet DTU Serial Converter Serial Server](https://www.iiotsys.net/product/mini-rs232-ethernet-serial-server/): Cortex-M3 MCU with 2MB Flash and 128KB SRAM Use FreeRTOS Operation System Support TCP/IP/Telnet /Modbus TCP Protocol Support RS232 To... - [Mini RS485 Ethernet Serial Server](https://iiotsys.net/product/mini-rs485-ethernet-serial-server/): Cortex-M3 MCU with 2MB Flash and 128KB SRAM Use FreeRTOS Operation System Support TCP/IP/Telnet /Modbus TCP Protocol Support RS485 To... - [Mini RS232 WiFi Serial Server](https://iiotsys.net/product/mini-rs232-wifi-serial-server/): Support 802. 11bgn Wireless Standard Support TCP/UDP/Telnet /Modbus TCP Protocol Support RS232 to Wi-Fi Conversion, Serial Speed Up to 230400... - [Mini RS485 WiFi Serial Server](https://iiotsys.net/product/mini-rs485-wifi-serial-server/): Support 802. 11bgn Wireless Standard Support TCP/UDP/Telnet /Modbus TCP Protocol Support RS485 to Wi-Fi Conversion, Serial Speed Up to 230400... - [Mini RS485 4G Serial Server](https://iiotsys.net/product/mini-rs485-4g-serial-server/): Support Bluetooth configuration parameters and data transparent transmission Support 4G full Netcom LTE-TDD, LTE-FDD Support TCP/UDP/MQTT/WebSocket/HTTP and other network communication... - [Mini RS485 4G Ethernet Serial Server](https://iiotsys.net/product/mini-rs485-4g-ethernet-serial-server/): Use MIPS MCU (32MB SRAM) and 16MB Flash, based on Linux OS Support LTE-TDD, LTE-FDD, WCDMA, TD-SCDMA, cellular network, sub-type... - [DIN-rail RS485 Ethernet Serial Server](https://iiotsys.net/product/din-rail-rs485-ethernet-serial-server/): Cortex-M3 MCU with 2MB Flash and 128KB SRAM Use FreeRTOS Operation System Support TCP/UDP/MQTT/HTTP/WebSocket Protocol Support Modbus TCP to RTU,... - [DIN-rail RS485 WiFi Serial Server](https://iiotsys.net/product/din-rail-rs485-wifi-serial-server/): Support 802. 11bgn Wireless Standard Support STA/AP/AP+STA Mode Support SmartLink V8 Smart Config (Provide APP) Support TCP/UDP/MQTT/HTTP/WebSocket Protocol Support Modbus... - [DIN-rail RS485 WiFi Ethernet Serial Server](https://iiotsys.net/product/din-rail-rs485-wifi-ethernet-serial-server/): MIPS MCU with 4MB Flash and 8MB SRAM. Run on eCos Support TCP/UDP/MQTT/HTTP/WebSocket Protocol Support Modbus TCP to RTU, Modbus... - [DIN-rail RS485 4G LTE Serial Server](https://iiotsys.net/product/din-rail-rs485-4g-lte-serial-server/): Support Bluetooth configuration parameters and data transparent transmission Support 4G full Netcom LTE-TDD, LTE-FDD supports China Mobile Unicom Telecom 4G... - [DIN-rail RS485 4G LTE Ethernet Serial Server](https://iiotsys.net/product/din-rail-rs485-4g-lte-ethernet-serial-server/): Use MIPS MCU (32MB SRAM) and 16MB Flash, based on Linux OS Support LTE-TDD, LTE-FDD, WCDMA, TD-SCDMA, cellular network, sub-type... - [RS485 RS232 RS422 WiFi Ethernet Serial Server](https://iiotsys.net/product/rs485-rs232-rs422-wifi-ethernet-serial-server/): MIPS MCU with 4MB Flash and 8MB SRAM. Run on eCos Support TCP/IP/Telnet /Modbus TCP Protocol Support RS232/RS422/RS485 to Ethernet/Wi-Fi... - [RS485 WiFi Serial Server](https://iiotsys.net/product/rs485-wifi-serial-server/): Support 802. 11bgn Wireless Standard Support TCP/UDP/Telnet /Modbus TCP Protocol Support RS485 to Wi-Fi Conversion, Serial Speed Up to 230400... - [2 Ports RS485 RS232 RS422 WiFi Ethernet Serial Converter Serial Server](https://www.iiotsys.net/product/2-ports-rs485-rs232-rs422-wifi-ethernet-serial-server/): MIPS MCU with 4MB Flash and 8MB SRAM. Run on eCos Support TCP/IP/Telnet /Modbus TCP Protocol Support 2 channel RS232/RS422/RS485... - [RS485 RS232 4G LTE Serial Server](https://iiotsys.net/product/rs485-rs232-4g-lte-serial-server/): Support LTE-TDD, LTE-FDD, WCDMA, TD-SCDMA, GPRS Support RS232/RS485 to 2G/3G/4G Data Transmission, UART baud rate Up to 460800bps Supports Max... - [2 Ports RS485 RS232 RS422 DI DO GPS 4G LTE WiFi Ethernet Serial Server](https://iiotsys.net/product/2-ports-rs485-rs232-rs422-di-do-gps-4g-lte-wifi-ethernet-serial-server/): MIPS MCU with 16MB Flash and 64MB SRAM. Run with Linux OpenWrt Support 4G/3G/GPRS, FDD-LTE, TDD-LTE, WCDMA, TD-SCDMA, CDMA2000, CDMA... - [RS485 RS232 RS422 Ethernet Serial Server](https://www.iiotsys.net/product/rs485-rs232-rs422-ethernet-serial-server/): MIPS MCU with 2MB Flash and 128KB SRAM Use FreeRTOS Operation System Support TCP/IP/Telnet/Modbus TCPProtocol Support Serial To 10M Ethernet... - [RS485 Ethernet Serial Server](https://iiotsys.net/product/rs485-ethernet-serial-server/): Cortex-M3 MCU with 2MB Flash and 128KB SRAM Use FreeRTOS Operation System Support TCP/IP/Telnet /Modbus TCP Protocol Support Serial To... - [2 Ports RS485 RS232 RS422 Ethernet Serial Server](https://iiotsys.net/product/2-ports-rs485-rs232-rs422-ethernet-serial-server/): MIPS MCU with 4MB Flash and 8MB SRAM. Run on eCos Support TCP/IP/Telnet /Modbus TCP Protocol Support 2 channel RS232/RS422/RS485... - [4 Ports RS485 RS232 RS422 Ethernet Serial Converter Serial Server](https://www.iiotsys.net/product/4-ports-rs485-rs232-rs422-ethernet-serial-server/): Internal User Four Eport-E10 module. Support 4 dependent RS232/422/485 Interface. After Ethernet Cascade, RS232/422/485 interface can be maximum to 32... --- # # Detailed Content ## Pages - Published: 2025-06-30 - Modified: 2025-06-30 - URL: https://www.iiotsys.net/refund_returns/ --- - Published: 2025-06-30 - Modified: 2025-06-30 - URL: https://www.iiotsys.net/terms-and-conditions/ --- - Published: 2025-03-25 - Modified: 2025-06-12 - URL: https://iiotsys.net/technologies/ --- - Published: 2025-03-25 - Modified: 2025-06-12 - URL: https://iiotsys.net/solutions/ --- - Published: 2025-03-25 - Modified: 2025-08-28 - URL: https://www.iiotsys.net/about-us/ --- > IIoTSys is your one-stop Industrial IoT online shop offering innovative solutions like serial servers, PLCs, gateways, networking and smart sensors in solar power inverters, data center, factory automation, sensor data collection. We provide professional support, fast shipping, and secure payments for all your IIoT needs. - Published: 2025-02-23 - Modified: 2025-06-30 - URL: https://www.iiotsys.net/privacy-policy/ --- - Published: 2019-11-20 - Modified: 2025-02-24 - URL: https://iiotsys.net/wishlist/ --- - Published: 2018-10-23 - Modified: 2025-08-28 - URL: https://www.iiotsys.net/contact-us/ --- - Published: 2018-10-16 - Modified: 2025-08-30 - URL: https://www.iiotsys.net/ --- --- ## Posts - Published: 2025-06-13 - Modified: 2025-08-28 - URL: https://www.iiotsys.net/understanding-industrial-iot/ - Categories: Technology --- - Published: 2025-06-13 - Modified: 2025-08-28 - URL: https://www.iiotsys.net/why-solar-power-inverters-need-smart-iot-monitoring-devices/ - Categories: Technology --- - Published: 2025-06-02 - Modified: 2025-08-28 - URL: https://www.iiotsys.net/mqtt-and-iiot-in-the-modern-factory/ - Categories: Technology --- --- ## Products - Published: 2025-08-04 - Modified: 2025-09-12 - URL: https://www.iiotsys.net/product/din-rail-2-ports-rs485-repeater-lightning-surge-isolator/ - SKU: REP12D - Price: 11.00 EUR - Product type: simple - Product categories: Serial Isolator - Product tags: DIN-rail, RS485 - Product shipping classes: Mini small Suppress lightning and ESD 600W Lightning surge protection power TVS, protect the circuit from damage 2500V rms isolation voltage, built-in optical isolator --- - Published: 2025-07-09 - Modified: 2025-07-10 - URL: https://www.iiotsys.net/product/din-rail-rs232-rs485-lorawan-dtu-serial-converter-serial-server/ - SKU: D9L - Price: 37.00 EUR - Product type: variable - Product categories: Serial Server - Product tags: DIN-rail, LoRaWAN, ModbusRTU - Product shipping classes: Mini small - Product Frequency: AS923, AU915, CN470, EU433, EU868, IN865, KR920, US915 - Product Transmit Power: 22dBm, 27dBm --- - Published: 2025-07-09 - Modified: 2025-07-10 - URL: https://www.iiotsys.net/product/din-rail-lorawan-4g-lte-wifi-ethernet-gateway/ - SKU: G43 - Price: 198.00 EUR - Product type: variable - Product categories: Router Gateway - Product tags: 4G LTE, DIN-rail, LAN, LoRaWAN, MQTT, WiFi - Product 4G Network: Integrated, None - Product Frequency: AS923, AU915, CN470, EU433, EU868, IN865, RU864, US915 --- - Published: 2025-07-08 - Modified: 2025-07-10 - URL: https://www.iiotsys.net/product/metal-rs232-rs485-lorawan-serial-server/ - SKU: D8P - Price: 37.00 EUR - Product type: variable - Product categories: Serial Server - Product tags: LoRaWAN, Metal, ModbusRTU - Product Frequency: AS923, AU915, CN470, EU433, EU868, IN865, KR920, US915 - Product Transmit Power: 22dBm, 27dBm --- - Published: 2025-04-29 - Modified: 2025-07-10 - URL: https://www.iiotsys.net/product/din-rail-rs485-2-4-5ghz-wifi-serial-server/ - SKU: PW31B - Price: 28.00 EUR - Product type: variable - Product categories: Serial Server - Product tags: DIN-rail, MQTT, RS485, WiFi - Product shipping classes: Mini small - Product Power Input: AC, DC Support 802.11 a/b/g/n wireless standard, support 2.4GHz and 5GHz dual band operation Support STA/AP/AP+STA Mode Support SmartLink V8 Smart Config (Provide APP) Support TCP/UDP/MQTT/HTTP/WebSocket Protocol Support Modbus TCP to RTU, Modbus Master Function Support RS485 To WiFi Conversion Support Webpage Easy Configuration or PC IOTService Tool Support Security Protocol Such As TLS/AES/DES3 Support Heartbeat and Resister Packet Function Support Webpage OTA Wireless Upgrade Support Industrial Temperature: -40to +70˚ C Multiple Type of Different Power Input： -H：100～240VAC@50～60Hz -M：9～48VDC@1A Size: 102.03 x 64.95 x 27.50 mm (L x W x H) ，C45 rail installation --- - Published: 2025-04-29 - Modified: 2025-07-10 - URL: https://www.iiotsys.net/product/mini-rs485-2-4-5ghz-wifi-serial-server/ - SKU: EW31B-0 - Price: 15.00 EUR - Product type: simple - Product categories: Serial Server - Product tags: Mini Size, MQTT, RS485, WiFi - Product shipping classes: Mini small Supports 802.11 a/b/g/n Wireless Standard, Supports dual Frequency Operation at 2.4GHz and 5GHz Support TCP/UDP/Telnet /Modbus TCP Protocol Support RS232/RS485/TTL to Wi-Fi Conversion, Serial Speed Up to 230400 bps Support STA/AP/AP+STA Mode Support SmartLink V8 Smart Config (Provide APP) Support Easy Configuration Through Web Interface or PC IOTService Tool Support Security Protocol Such As TLS/AES/DES3 Support Webpage OTA Wirelss Upgrade Support External Antenna Wide DC Input：5～36VDC Size: 68.5 x 35 x 17.8 mm (L x W x H) --- - Published: 2025-04-29 - Modified: 2025-07-02 - URL: https://www.iiotsys.net/product/mini-rs485-wifi-bluetooth-serial-server/ - SKU: EW41B-0 - Price: 14.00 EUR - Product type: simple - Product categories: Serial Server - Product tags: Bluetooth, Mini Size, MQTT, RS485, WiFi - Product shipping classes: Mini small Support for the 802.11b/g/n and BLE 5.0 wireless standard Support for Bluetooth mode SmartBLELink distribution network Support TCP / UDP / MQTT / WebSocket / HTTP and other network communication protocols Support TTL/RS232/RS485 to Wi-Fi Conversion, Serial Speed Up to 230400 bps Support STA/AP/AP+STA Mode Support SmartLink V8 Smart Config (Provide APP) Support Easy Configuration Through Web Interface or PC IOTService Tool Support Security Protocol Such As TLS/AES/DES3 Support Webpage OTA Wirelss Upgrade Support Internal PCB Antenna and External SMA antenna Wide power supply is 5~36V power supply Dimensions: 68.5 x 35 x 17.8mm FCC/CE/SRRC/IC Certificated --- - Published: 2025-04-25 - Modified: 2025-07-10 - URL: https://www.iiotsys.net/product/mini-rs232-ethernet-serial-server/ - SKU: EE10A - Price: 10.00 EUR - Product type: simple - Product categories: Serial Server - Product tags: LAN, Mini Size, MQTT, RS232 - Product shipping classes: Mini small Cortex-M3 MCU with 2MB Flash and 128KB SRAM Use FreeRTOS Operation System Support TCP/IP/Telnet /Modbus TCP Protocol Support RS232 To 10/100M Ethernet Conversion, Serial Speed Up to 460800 bps Support 10/100M Ethernet Auto-Negotiation Support Webpage Easy Configuration or PC IOTService Tool Support Security Protocol Such As TLS/AES/DES3 Support Heartbeat and Resister Packet Function Support Webpage OTA Wireless Upgrade Support Industrial Temperature: -40 to +85˚ C Wide DC Input 9～36VDC --- - Published: 2025-04-25 - Modified: 2025-07-10 - URL: https://www.iiotsys.net/product/2-ports-rs485-rs232-rs422-wifi-ethernet-serial-server/ - SKU: HF2221A - Price: 48.00 EUR - Product type: simple - Product categories: Serial Server - Product tags: LAN, Metal, MQTT, RS232, RS422, RS485, WiFi - Product shipping classes: Middle MIPS MCU with 4MB Flash and 8MB SRAM. Run on eCos Support TCP/IP/Telnet /Modbus TCP Protocol Support 2 channel RS232/RS422/RS485 to Ethernet/Wi-Fi Conversion, Serial Speed Upto 230400 bps Support STA/AP/AP+STA Mode Support Router or Bridge Network Working Mode. Support 10/100M Ethernet Auto-Negotiation Support Easy Configuration Through a Web Interface or PC IOTService Tool Support Security Protocol Such As TLS/AES/DES3 Support Web OTA Wirelss Upgrade Wide DC Input 5~36VDC Size: 108 x 146 x 25 mm (L x W x H) --- - Published: 2025-04-25 - Modified: 2025-07-10 - URL: https://www.iiotsys.net/product/4-ports-rs485-rs232-rs422-ethernet-serial-server/ - SKU: HF5142B - Price: 70.00 EUR - Product type: simple - Product categories: Serial Server - Product tags: LAN, Metal, MQTT, RS232, RS422, RS485 - Product shipping classes: Middle Internal User Four Eport-E10 module. Support 4 dependent RS232/422/485 Interface. After Ethernet Cascade, RS232/422/485 interface can be maximum to 32 channel. Support TCP/IP/Telnet /Modbus TCP Protocol Support Serial To 10/100M Ethernet Conversion, Serial Speed Upto 921600 bps Support 10/100M Ethernet Auto-Negotiation Support Easy Configuration Through a Web Interface Support Security Protocol Such As TLS/AES/DES3 Support Web OTA Wirelss Upgrade Support Industrial Temperature: -40 to +85˚ C Size: 197 x 165 x 25 mm (L x W x H) --- ---