{"product_id":"usriot-usr-n520-serial-to-ethernet-server-tcp-ip-converter-double-serial-device-rs232-rs485-rs422-multi-host-polling","title":"USRIOT USR-N520 Serial to Ethernet Server TCP IP Converter Double Serial Device RS232 RS485 RS422 Multi-host Polling","description":"\u003ch1 style=\"box-sizing: content-box;margin: 0.0px 0.0px 0.5em;padding: 0.0px;border: 0.0px;font-weight: 400;font-size: 3.0em;line-height: 1;font-family: arial , helvetica , sans-serif;vertical-align: baseline;color: #000000;\"\u003eUSRIOT USR-N520 Serial to Ethernet Server TCP IP Converter Double Serial Device RS232 RS485 RS422 DHCP\/Modbus Multi-host Polling\u003c\/h1\u003e\n\n\u003cp style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px 0.0px 15.0px;border: 0.0px;font-size: 13.0px;line-height: inherit;font-family: arial , helvetica , sans-serif;vertical-align: baseline;color: #222222;\"\u003e\u003cspan style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 22.0px;line-height: inherit;vertical-align: baseline;\"\u003eUSR-N520 is a double serial device server,which can realize transparent transmission between TCP\/UDP data package and RS232\/RS485\/RS422 interface.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px 0.0px 15.0px;border: 0.0px;font-size: 13.0px;line-height: inherit;font-family: arial , helvetica , sans-serif;vertical-align: baseline;color: #222222;\"\u003e\u003cspan style=\"font-size: 26.0px;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003epackage include ：1pc  USR-N520\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003ch4 style=\"box-sizing: content-box;margin: 0.0px 0.0px 1.25em;padding: 0.0px;border: 0.0px;font-weight: 400;font-size: 1.2em;line-height: 1.25;font-family: arial , helvetica , sans-serif;vertical-align: baseline;color: #000000;\"\u003e\u003cspan style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 20.0px;line-height: inherit;vertical-align: baseline;\"\u003eIntroduction of Serial Device Server\u003c\/span\u003e\u003c\/h4\u003e\n\n\u003cp style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-size: 13.0px;line-height: inherit;font-family: arial , helvetica , sans-serif;vertical-align: baseline;color: #000000;\"\u003e\u003cspan style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 20.0px;line-height: inherit;vertical-align: baseline;\"\u003eUSR-N520 is a double serial device server,which can realize transparent transmission between TCP\/UDP data package and RS232\/RS485\/RS422 interface.The device has unique functions such as network printing,Modbus multi-host polling and watchdog mechanism. USR-N520 is based on ARM processor and it is internally integrated with TCP\/IP protocol.User can easily realize embedded device networking.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003ch4 style=\"box-sizing: content-box;margin: 0.0px 0.0px 1.25em;padding: 0.0px;border: 0.0px;font-weight: 400;font-size: 1.2em;line-height: 1.25;font-family: arial , helvetica , sans-serif;vertical-align: baseline;color: #000000;\"\u003e\u003cspan style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 20.0px;line-height: inherit;vertical-align: baseline;\"\u003eFeatures of Serial Device Server\u003c\/span\u003e\u003c\/h4\u003e\n\n\u003cul\u003e\n\t\u003cli\u003e\u003cspan style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 20.0px;line-height: inherit;vertical-align: baseline;\"\u003eCortex-M4 kernel,industrial working temperature range and TCPIP protocol stack.\u003c\/span\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cspan style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 20.0px;line-height: inherit;vertical-align: baseline;\"\u003eAuto-MDI\/MDIX,RJ45 port with 10\/100Mbps\u003c\/span\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cspan style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 20.0px;line-height: inherit;vertical-align: baseline;\"\u003eTCP Server,TCP Client,UDP Client,UDP Server and HTTPD Client work mode\u003c\/span\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cspan style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 20.0px;line-height: inherit;vertical-align: baseline;\"\u003eSupport network printing\u003c\/span\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cspan style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 20.0px;line-height: inherit;vertical-align: baseline;\"\u003eSupport Modbus multi-host polling\u003c\/span\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cspan style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 20.0px;line-height: inherit;vertical-align: baseline;\"\u003eTwo ports can work independently at the same time\u003c\/span\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cspan style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 20.0px;line-height: inherit;vertical-align: baseline;\"\u003eSupport Modbus RTU to Modbus TCP\u003c\/span\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cspan style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 20.0px;line-height: inherit;vertical-align: baseline;\"\u003eCan distinguish which serial port connects to the device via port number\u003c\/span\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cspan style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 20.0px;line-height: inherit;vertical-align: baseline;\"\u003eSupport virtual serial port and provide corresponding software USR-VCOM\u003c\/span\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cspan style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 20.0px;line-height: inherit;vertical-align: baseline;\"\u003eSerial baud rate from 600bps to 230.4K bps;Check bit of None,Odd,Even,Mark and Space\u003c\/span\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cspan style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 20.0px;line-height: inherit;vertical-align: baseline;\"\u003eDNS and DHCP supported\u003c\/span\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cspan style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 20.0px;line-height: inherit;vertical-align: baseline;\"\u003eProvide PC TCP\/IP socket programming example such as VB,C++,Delphi,Android and IOS\u003c\/span\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cspan style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 20.0px;line-height: inherit;vertical-align: baseline;\"\u003eBuilt-in webpage;also can customize webpage for users\u003c\/span\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cspan style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 20.0px;line-height: inherit;vertical-align: baseline;\"\u003eReload button,one key to restore default settings\u003c\/span\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cspan style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 20.0px;line-height: inherit;vertical-align: baseline;\"\u003eRJ45 with Link\/Data indicator light,built-in isolation transformer and 2 KV electromagnetic isolation\u003c\/span\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cspan style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 20.0px;line-height: inherit;vertical-align: baseline;\"\u003eThe global unique MAC address bought from IEEE (begin with D8-B0-4C);user can define MAC address\u003c\/span\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cspan style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 20.0px;line-height: inherit;vertical-align: baseline;\"\u003eSupport upgrade firmware via network\u003c\/span\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cspan style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 20.0px;line-height: inherit;vertical-align: baseline;\"\u003eSupport keepalive,rapidly detect dead links\u003c\/span\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cspan style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 20.0px;line-height: inherit;vertical-align: baseline;\"\u003eSupport account and password,can be used to page login and network settings\u003c\/span\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cspan style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 20.0px;line-height: inherit;vertical-align: baseline;\"\u003eSupport one channel Websocket,realize bidirectional transparent transmission between webpage and serial 0\u003c\/span\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cspan style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 20.0px;line-height: inherit;vertical-align: baseline;\"\u003eTwo serial ports;each serial can work as rs232,rs485 or rs422;DB9 female;provide rs485\/rs422 converter\u003c\/span\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cspan style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 20.0px;line-height: inherit;vertical-align: baseline;\"\u003eTwo channel serial communication indicator: TX\/RX\u003c\/span\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cspan style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 20.0px;line-height: inherit;vertical-align: baseline;\"\u003eSupport DC adapter and 5.08-2 terminal power supply\u003c\/span\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cspan style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 20.0px;line-height: inherit;vertical-align: baseline;\"\u003eSupport UDP broadcast function\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4 style=\"box-sizing: content-box;margin: 0.0px 0.0px 1.25em;padding: 0.0px;border: 0.0px;font-weight: 400;font-size: 1.2em;line-height: 1.25;font-family: arial , helvetica , sans-serif;vertical-align: baseline;color: #000000;\"\u003e\u003cspan style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 20.0px;line-height: inherit;vertical-align: baseline;\"\u003eApplication Field of Serial Device Server\u003c\/span\u003e\u003c\/h4\u003e\n\n\u003cul\u003e\n\t\u003cli\u003e\u003cspan style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 20.0px;line-height: inherit;vertical-align: baseline;\"\u003eIndustrial data transmission, industrial automation\u003c\/span\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cspan style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 20.0px;line-height: inherit;vertical-align: baseline;\"\u003esecurity and protection monitoring, public security\u003c\/span\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cspan style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 20.0px;line-height: inherit;vertical-align: baseline;\"\u003eSmart home, power control, environmental monitoring, intelligent agriculture\u003c\/span\u003e\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cspan style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 20.0px;line-height: inherit;vertical-align: baseline;\"\u003eDoor check on work attendance system, \u003c\/span\u003e\u003cspan style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 20.0px;line-height: inherit;vertical-align: baseline;\"\u003ePOS system, rice selling system\u003c\/span\u003e\n\u003c\/li\u003e\n\t\u003cli\u003e\u003cspan style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 20.0px;line-height: inherit;vertical-align: baseline;\"\u003eBuilding automation system, power monitoring, self-service banking system, telecom machine room monitoring\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4 style=\"box-sizing: content-box;margin: 0.0px 0.0px 1.25em;padding: 0.0px;border: 0.0px;font-weight: 400;font-size: 1.2em;line-height: 1.25;font-family: arial , helvetica , sans-serif;vertical-align: baseline;color: #000000;\"\u003e\u003cspan style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 20.0px;line-height: inherit;vertical-align: baseline;\"\u003eWork Mode of Serial Device Server\u003c\/span\u003e\u003c\/h4\u003e\n\n\u003cp style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-size: 13.0px;line-height: inherit;font-family: arial , helvetica , sans-serif;vertical-align: baseline;color: #000000;\"\u003e\u003cimg height=\"346\" src=\"https:\/\/ae01.alicdn.com\/kf\/HTB1fxktKpXXXXcmXpXXq6xXFXXXR.jpg\" style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 0.0px;line-height: inherit;vertical-align: middle;color: transparent;width: auto;\" width=\"761\"\u003e \u003cimg height=\"346\" src=\"https:\/\/ae01.alicdn.com\/kf\/HTB1CS7lKpXXXXXaXVXXq6xXFXXX4.jpg\" style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 0.0px;line-height: inherit;vertical-align: middle;color: transparent;width: auto;\" width=\"761\"\u003e \u003cimg height=\"346\" src=\"https:\/\/ae01.alicdn.com\/kf\/HTB1McosKpXXXXXAXFXXq6xXFXXXW.jpg\" style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 0.0px;line-height: inherit;vertical-align: middle;color: transparent;width: auto;\" width=\"761\"\u003e\u003c\/p\u003e\n\n\u003ch4 style=\"box-sizing: content-box;margin: 0.0px 0.0px 1.25em;padding: 0.0px;border: 0.0px;font-weight: 400;font-size: 1.2em;line-height: 1.25;font-family: arial , helvetica , sans-serif;vertical-align: baseline;color: #000000;\"\u003e\u003cspan style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 20.0px;line-height: inherit;vertical-align: baseline;\"\u003eApplication of Serial Device Server\u003c\/span\u003e\u003c\/h4\u003e\n\n\u003cp style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-size: 13.0px;line-height: inherit;font-family: arial , helvetica , sans-serif;vertical-align: baseline;color: #000000;\"\u003e\u003cimg height=\"766\" src=\"https:\/\/ae01.alicdn.com\/kf\/HTB193oFKpXXXXXxXXXXq6xXFXXX5.jpg\" style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 0.0px;line-height: inherit;vertical-align: middle;color: transparent;width: auto;\" width=\"760\"\u003e\u003c\/p\u003e\n\n\u003ch4 style=\"box-sizing: content-box;margin: 0.0px 0.0px 1.25em;padding: 0.0px;border: 0.0px;font-weight: 400;font-size: 1.2em;line-height: 1.25;font-family: arial , helvetica , sans-serif;vertical-align: baseline;color: #000000;\"\u003e\u003cspan style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 20.0px;line-height: inherit;vertical-align: baseline;\"\u003eImages of Serial Device Server\u003c\/span\u003e\u003c\/h4\u003e\n\n\u003ch4 style=\"box-sizing: content-box;margin: 0.0px 0.0px 1.25em;padding: 0.0px;border: 0.0px;font-weight: 400;font-size: 1.2em;line-height: 1.25;font-family: arial , helvetica , sans-serif;vertical-align: baseline;color: #000000;\"\u003e \u003c\/h4\u003e\n\n\u003cp style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-size: 13.0px;line-height: inherit;font-family: arial , helvetica , sans-serif;vertical-align: baseline;color: #000000;\"\u003e\u003cspan style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 20.0px;line-height: inherit;vertical-align: baseline;\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/HTB1nyAvKpXXXXbqXpXXq6xXFXXXA.jpg\" style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 0.0px;line-height: inherit;vertical-align: middle;color: transparent;width: auto;\" width=\"800\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-size: 13.0px;line-height: inherit;font-family: arial , helvetica , sans-serif;vertical-align: baseline;color: #000000;\"\u003e\u003cspan style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 20.0px;line-height: inherit;vertical-align: baseline;\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/HTB1dB7xKpXXXXX1XpXXq6xXFXXXe.jpg\" style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 0.0px;line-height: inherit;vertical-align: middle;color: transparent;width: auto;\" width=\"800\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-size: 13.0px;line-height: inherit;font-family: arial , helvetica , sans-serif;vertical-align: baseline;color: #000000;\"\u003e\u003cspan style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 20.0px;line-height: inherit;vertical-align: baseline;\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/HTB1CWEiKpXXXXbvXVXXq6xXFXXXN.jpg\" style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 0.0px;line-height: inherit;vertical-align: middle;color: transparent;width: auto;\" width=\"800\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-size: 13.0px;line-height: inherit;font-family: arial , helvetica , sans-serif;vertical-align: baseline;color: #000000;\"\u003e\u003cspan style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 20.0px;line-height: inherit;vertical-align: baseline;\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/HTB1PCkcKpXXXXazaXXXq6xXFXXXu.jpg\" style=\"box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 0.0px;line-height: inherit;vertical-align: middle;color: transparent;width: auto;\" width=\"800\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n","brand":"pfdeal","offers":[{"title":"Default Title","offer_id":31975080198219,"sku":"32981358556","price":59.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0015\/6634\/3243\/products\/USRIOT-USR-N520-Serial-to-Ethernet-Server-TCP-IP-Converter-Double-Serial-Device-RS232-RS485-RS422.jpg?v=1585036462","url":"https:\/\/www.pfdeal.com\/products\/usriot-usr-n520-serial-to-ethernet-server-tcp-ip-converter-double-serial-device-rs232-rs485-rs422-multi-host-polling","provider":"pfdeal","version":"1.0","type":"link"}