Embsys Technologies Private Limited

8*RS485 Ports Serial Ethernet Converter is designed to realize bidirectional data transparent transmission between the serial port and the Ethernet port. The 8 RS485 ports can work independently and does not affect each other. Each ports can be configured for different baud rates. It supports 600bps~921600bps wide baudrate.
??? 8 serial ports support RS485 communication, indicator lights (TX/RX)
??? Functions of Modbus gateway, Modbus RTU to Modbus TCP, Modbus polling
??? Support TCP Server, TCP Client, UDP Client, UDP Server, HTTPD Client working modes
??? Support virtual serial port and provide corresponding software USR-VCOM
??? Serial baud rate from 600bps to 921.6K bps; Parity of None, Odd, Even
??? Functions of Modbus gateway, Modbus RTU to Modbus TCP, Modbus polling

Specifications

USR-TCP232-410S is a dual serial RS232 RS485 Ethernet converter, which is based on TI Cortex-M4 solution integrated TCP/IP protocol stack.

• Industrial Solution: TI Cortex M4 Solution, -40~85C
• Web Server: Web socket/ Web to Serial
• Modbus Gateway: Modbus RTU to Modbus TCP / Modbus Pollinig
• Flow Control: CTS/RTS, XON/XOFF
• 2 Network links, each serial supports sending data to two target servers
• Network Printing
• N series supports hardware watchdog, never crash

• Multiple indicator lights for convenient debugging
• Power-line terminal for industrial application
• ARM kernel and TCP/IP protocol stack
• Auto-MDI/MDIX,RJ45 port with 10/100Mbps
• TCP Server,TCP Client,UDP,UDP Server and HTTPD Client work mode
• Two ports can work independently at the same time
• Support virtual serial port and provide corresponding software USR-VCOM
• Serial baud rate from 600bps to 230.4K bps;Check bit of None,Odd,Even,Mark and Space
• DNS and DHCP supported
• Provide PC TCP/IP SOCKET programming example,VB,C++,Delphi,Android,IOS
• Built-in webpage;also can customize webpage for users
• Reload button,one key to restore default settings
• RJ45 with Link/Data indicator light,built-in isolation transformer and 2 KV electromagnetic isolation
• The global unique MAC address bought from IEEE,user can define MAC address
• Upgrade firmware via network
• Keepalive,rapidly detect dead links
• Support account and password,can be used to page login and network settings
• Support one channel Websocket,realize bidirectional transparent transmisison bewteen webpage and serial 0
• Support UDP broadcast function,send and receive data from all ip in the network

• Industrial data transmission, industrial automation
• security and protection monitoring, public security
• Smart home, power control, environmental monitoring, intelligent agriculture
• Door check on work attendance system, POS system, rice selling system
• Building automation system, power monitoring, self-service banking system, telecom machine room monitoring

USR-TCP232-304 is a low-cost serial RS485 Ethernet converter, which can realize bidirectional transparent transmission between RS485 and local Ethernet or Internet. It is integrated with TCP/IP protocol.

• Support DHCP, automatically obtain an IP address and query IP address through serial setting protocol
• Support DNS function
• Set parameters through webpage
• Upgrade firmware via network
• Auto-MDI/MDIX, RJ45 port with 10/100Mbps
• Serial port baud rate from 600 bps to 230.4 Kbps, Check bit of None, Odd, Even, Mark and Space
• Work mode: TCP Server, TCP Client, UDP Client, UDP Server, HTTPD Client
• Support virtual serial port and provide corresponding software USR-VCOM
• Heartbeat package mechanism to ensure connection is reliable, put an end to dead link
• User-defined registration package mechanism, check connection status and use as custom packet header
• Under TCP Server mode, Client number ranges from 1 to 16; default number is 4
• The global unique MAC address bought from IEEE, user can define MAC address
• Restore factory default
• Across the gateway, switches, routers
• Can work in LAN, also can work in the Internet (external network)
• Provide PC TCP/IP socket programming example such as VB,C++,Delphi,Android and IOS
• Support customization

• Industrial data transmission, industrial automation
• security and protection monitoring, public security
• Smart home, power control, environmental monitoring, intelligent agriculture
• Door check on work attendance system, POS system, rice selling system
• Building automation system, power monitoring, self-service banking system, telecom machine room monitoring

• TI Cortex-M4 kernel,industrial working temperature range and TCPIP protocol stack.
• Auto-MDI/MDIX,RJ45 port with 10/100Mbps
• TCP Server,TCP Client,UDP Client,UDP Server and HTTPD Client work mode
• 4 ports can work independently at the same time
• Can distinguish which serial port connects to the device via port number
• Support virtual serial port and provide corresponding software USR-VCOM
• Serial baud rate from 600bps to 230.4K bps
• DNS and DHCP supported
• Provide PC TCP/IP socket programming example such as VB,C++,Delphi,Android and IOS
• Built-in webpage;also can customize webpage for users
• The global unique MAC address bought from IEEE (begin with D8-B0-4C);user can define MAC address
• Support upgrade firmware via network
• Support keepalive,rapidly detect dead links
• Support account and password,can be used to page login and network settings
• Support one channel Websocket,realize bidirectional transparent transmission between webpage and serial 0
• Support Modbus RTU to Modbus TCP
• Support UDP broadcast function
• Each serial can work as rs232,rs485 or rs422; Default port is RS232 BD9 male port
• Four channel serial communication indicator: TX/RX, CTS/RTS, XON/XOFF
• Support DC adapter and 5.08-2 terminal power supply
• Reload button,one key to restore default settings
• RJ45 with Link/Data indicator light,built-in isolation transformer and 2 KV electromagnetic isolation

Serial RS232 RS485 RS422 Ethernet converter: [USR-TCP232-306] is a multi serial port ethernet converter,which can realize bi-directional transparent transmission between RS232/RS485/RS422 and Ethernet. User can directly process data interaction through network and device to realize remote data acquisition, remote control and management.

• Auto-MDI/MDIX, RJ45 port with 10/100Mbps
• Work mode: TCP Server, TCP Client, UDP Client, UDP Server, HTTPD Client
• Baud rate of serial port can be configured from 600 bps to 230.4 Kbps, supports check bit of none, odd, even, mark and space
• Heartbeat package mechanism to ensure connection is reliable, put an end to dead link
• User-defined registration package mechanism, check connection status and use as custom packet header
• Supports RS232/RS485/RS422 port ( Can’t be used at one time)
• Under TCP Server Mode, the connection number with client can be randomly set from 1 to 16, default number is 4. IP has been connected can be shown according to connectiong with calculating send / recceive dat.
• When connection number reaches a maximun, the new connection is kicked off the old one can be configured by user
• Parameters can be configured by built-in webpage, AT command, serial port procotol and network procotol. Setting procotol is avaliable to integrate into user’s software.
• Supports TCP client short connection function, user-defined the disconnected time.
• Device restart if no data transmission or timeout. User-defined the restart time.
• If data buffer needs to clear configuration before TCP connection establishment
• Supports DHCP, automatically obtain an IP address and query IP address via serial setting protocol.
• The global unique MAC address, user-defined MAC address
• DNS function
• DNS server addres can be defined
• Firmware can be upgraded by network
• Provide Virtual com software
• Restore factory setting through software or hardware
• Running across the gateway, switches or routers.
• Can work in LAN, also can work in the Internet.

USR-N540 is a 4-port Serial to IP Converters. USR IOT's serial to IP Converters USR-N540 can realize bi-directional transparent transmission between RS232/RS485/RS422 and network.

 4-port RS-232/422/485 Serial to IP Converters
 Power supply accepts wide voltage input range DC 9-36V
 Support TCP server/client, UDP server/client,https client, Virtual COM
 Support Modbus RTU to Modbus TCP
 Support flow control CTS/RTS, XON/XOFF
 Support 4 RS-232, RS-485/422 3IN1 serial port to 1 10/100Base-T(X) self-adaptive Ethernet interface
 Configuration via Web Server page, AT commands, and Windows Utility

Specifications

USR-WIFI232-630 wifi serial server is a wireless networking server, which is used for project of RS232/RS485 serial equipment to WIFI or Ethernet networking. and It has 2 channel RJ45 port.

• Httpd Client: serial data submitted to server by HTTP (GET/POST)
• Websocket: support bidirectional transparent transmission between built-in webpage and serial
• DNS/DHCP: support dynamically to acquire domain and IP
• Username/Password Verification
• Modbus: support mutual conversion between Modbus TCP and Modbus RTU
• TCPB Function: support 2 network links and send data to 2 targets
• Customized MAC: users can define the MAC address by themselves
• Built-in Webpage
• Firmware Upgrade through Webpage
• ID Registration: send ID package when TCP establishes connection,or each data automatically increases ID packet header
• Virtual Serial Software (USR-VCOM) automatically connect devices
• Baud Rate Sync: network protocol dynamically sets serial parameter
• 485 Protection: overcurrent protection, lightning protection, anti-static
• Power Protection: reverse connection protection, anti-static, anti-surge
• ESD Protection: pass the test of 8KV contact discharge

• Serial RS232/RS485 to Wifi or Ethernet
• WiFi remote control and monitoring, TCP/IP and WiFi coprocessor
• WiFi remote control toy such as aircraft and cars
• WiFi Internet radio, camera, digital photo frame
• Medical instrument, data acquisition, handheld device
• WiFi fatness testing machine, smart card terminal, Smart Home
• Instrument, equipment parameter monitoring, wireless POS machine
• Modern agriculture, military field and other wireless related secondary development applications

USR-G781 is an industrial cellular modem router, which provides a serial to cellular networking solution. Provide Serial and Ethernet Connectivity to PLC, RTU, Data Loggers,Wireless SCADA applications and IP Cameras at Remote Sites.
USR-G781-A, American version
USR-G781-E, Europe version
USR-G781-AU, Australia version.

??? Supports 2 10/100Base-T(X) self-adaptive Ethernet interface and 1RS485 port
??? Hardware watchdog ,rugged metal casing and wall mounting
??? 2 RJ45 port, one can be WAN or LAN port and another one can be LAN port
??? Support VPN(PPTP) client
??? Support static routing

Specifications

• 1 RS232 serial port and 1 RS485 serial port (not use simultaneously)
• Power: 5V~36V
• Quad-Band GSM/GPRS 850/900/1800/1900MHz
• Flow Control: CTS/RTS
• Transparent mode(TCP/UDP)/HTTP client/SMS mode

USR-GPRS232-730 GPRS Modem / GPRS DTU (Data Transfer Unit) is a wireless terminal equipment which can convert serial data to IP data or convert IP data to serial data through gprs /GSM network. 730 is based on USR-GM3. Clients can use this product to realize bidirectional transparent transmission from serial port to network through simple AT command.

Industrial Serial to IP cellular GPRS modem USR-GPRS232-730 can convert the serial data RS232/485 into IP data and then transfer to data center through GPRS 2.5G mobile network.

 Quad-band GSM/GPRS/EDGE 850/900/1800/1900 MHz
 Support double data centers, one main and another backup
 Connecting TCP/IP and sending SMS via AT commands
 1 RS232 serial port and 1 RS485 serial port (not use simultaneously)
 Flow Control: CTS/RTS
 Transparent mode(TCP/UDP)/https client/SMS mode

Specifications

Industrial Serial to IP cellular GPRS modem which convert the serial data RS232/485 into IP data and then transfer to data center through GPRS 2.5G mobile network. USR-GPRS232-730 is based on USR-GM3.  Can use this product to realize bidirectional transparent transmission from serial port to network through simple AT command.

8-port RS232/422/485 serial device servers USR-N668.

 8-port RS-232/422/485 serial device servers
 Power supply accepts wide voltage input range AC 85-265V
 Support TCP server/client, UDP server/client, https client, Virtual COM
 Support Modbus RTU to Modbus TCP
 Support flow control CTS/RTS, XON/XOFF
 Support 8 software selectable RS-232, RS-485/422 RJ45 serial port to 1 10/100Base-T(X) self-adaptive Ethernet interface, rack-mount
 Configuration via Web Server page, AT commands, and Windows Utility

Specifications

USR-TCP232-T2 Serial TTL to Ethernet Module which can realize data bidirectional transparent transmission between serial TTL and RJ45 Port. USR-TCP232-T2 is based on Cortex-M0 core- low cost solution. It has characters of low power, fast speed and high efficiency.

• DHCP DNS, automatically obtain an IP address and query IP address through serial setting protocol
• Set parameters through webpage and serial AT command
• Upgrade firmware via network
• Auto-MDI/MDIX, RJ45 port with 10/100Mbps
• Serial port baud rate from 600 bps to 460.8 Kbps, Check bit of None,Odd,Even,Mark and Space
• Work mode: TCP Server, TCP Client, UDP Client, UDP Server, HTTPD Client
• Support virtual serial port and provide corresponding software USR-VCOM
• Heartbeat package mechanism to ensure connection is reliable, put an end to dead link
• User-defined registration package mechanism, check connection status and use as custom packet header
• Under TCP Server mode, Client number ranges from 1 to 16; default number is 4
• The global unique MAC address bought from IEEE, user can define MAC address
• Restore factory default
• Across the gateway, switches, routers
• Can work in LAN, also can work in the Internet (external network)
• Provide PC TCP/IP socket programming example such as VB,C++,Delphi,Android and IOS
• Support customization

• Industrial data transmission, industrial automation
• security and protection monitoring, public security
• Smart home, power control, environmental monitoring, intelligent agriculture
• Door check on work attendance system, POS system, rice selling system
• Building automation system, power monitoring, self-service banking system, telecom machine room monitoring

     RS485 to 4G CAT-1 DTU Data Converter DIN rail based 4G CAT1 data converter DTU unit which gets the data from RS232 and send to cloud server or SMS  It supports Cat-1 network access of the three major domestic operators, has dual-card single-standby function, the product has a built-in patch card (the factory provides free data, and the user can renew), and the external SIM card slot is reserved for users to use; Adopt industrial-grade design standards, support wide-voltage terminal power supply, support FOTA remote self-upgrade and FTP other upgrade protocol. DR154 is the 485 version, DR152 is the 232 version, and DR150 is the TTL (3.0V) version.

RS232 to Ethernet Converters, used for data transparent transmission. USR-TCP232-302 is a low-cost serial device server,whose function is to realize bidirectional transparent transmission between RS232 and Ethernet. USR-TCP232-302 is internally integrated with TCP/IP protocol. User can apply it to device networking communication.

• Support DHCP, automatically obtain an IP address and query IP address through serial setting protocol
• Support DNS function
• Set parameters through webpage
• Upgrade firmware via network
• Auto-MDI/MDIX, RJ45 port with 10/100Mbps
• Serial port baud rate from 600 bps to 230.4 Kbps, Check bit of None, Odd, Even, Mark and Space
• Work mode: TCP Server, TCP Client, UDP Client, UDP Server, HTTPD Client
• Support virtual serial port and provide corresponding software USR-VCOM
• Heartbeat package mechanism to ensure connection is reliable, put an end to dead link
• User-defined registration package mechanism, check connection status and use as custom packet header
• Under TCP Server mode, Client number ranges from 1 to 16; default number is 4
• The global unique MAC address bought from IEEE, user can define MAC address
• Restore factory default
• Across the gateway, switches, routers
• Can work in LAN, also can work in the Internet (external network)
• Provide PC TCP/IP socket programming example such as VB,C++,Delphi,Android and IOS
• Support customization

• Industrial data transmission, industrial automation
• security and protection monitoring, public security
• Smart home, power control, environmental monitoring, intelligent agriculture
• Door check on work attendance system, POS system, rice selling system
• Building automation system, power monitoring, self-service banking system, telecom machine room monitoring

USR-W660 is a powerful dual-band Wi-Fi serial device server, which can realize data communication between serial devices and Ethernet/Wi-Fi devices. It adopts Qualcomm quad-core processor IPQ6000, the main frequency is up to 1.2Ghz. USR-W660 is equipped with 1*RS232/485 serial port, 2*RJ45 Gigabit Ethernet port, 2.4G and 5.8G dual-band Wi-Fi. It supports Wi-Fi roaming function with fast switching time, especially suitable for mobile scenarios, such as AGV, robot, etc.

Rich Networking Methods

USR-W660 provides a wealth of networking methods: AP, STA, AP+STA, AP+LAN, AP+WAN, STA+LAN, STA+WAN. Through different networking methods, the data communication between the serial port device/LAN device and the remote server/LAN server can be realized, which can meet the complex network application requirements of customers.

Fast Wi-Fi Roaming, More Stable CommunicationUSR-W660 can realize fast switching between different APs through the W-Fi roaming function. The switching time is less than 100ms, which can ensure real-time and reliable data transmission. It is very suitable for mobile scenarios such as AGV and robots.

Dual Band Wi-Fi6, More Powerful Performance

• 2.4G & 5.8G Wi-Fi, IEEE 802.11 b/g/n/ac/ax.
• 2*2 MIMO, up to 1800Mbps.
• 60+ accessible terminals.
• AP/STA mode supported.
• Wi-Fi roaming function, less than 100ms latency.
• Multiple security authentication methods and encryption algorithms supported: mixed-psk/psk/psk2/psk2+ccmp.

In an open environment, the coverage distance can reach 20

Rich Product Features

• Modbus Gateway: Modbus RTU/TCP protocol conversation, Modbus multi-host polling.
• Support Transparant MQTT/TCP/UDP/HTTP data communication.
• Heartbeat Packet Function: Remote server can detect abnormal disconnection from the client using this feature.
• Registration Packet Funciton: The server can identify different clients by usingregistration packets.

• 0 meters

Data Transmission Encryption, More Security

• Supports SSL/TLS encryption in TCP client, HTTP client and MQTT operation modes.
• Supports two-way certificates authentication.

Remote Management, Anytime, Anywhere

SNMP Protocol: Users can remotely view device information, modify device parameters, and monitor device information through the SNMP protocol.It does not need to go to the site to monitor and configure devices one by one. The version of SNMP supported by this device is V2C and V3.PUSR Platform: USR-W660 cooperates with PUSR platform, users can realize remote login configuration webpage, data debugging and remote firmware upgrade functions. Users can also monitor the online/offline record of the device. With all the above functions, users can monitor and manage the device conveniently

Industrial-Grade Design, High Reliability

• EFT Protection: Level 3. Protect device against damage caused by instantaneous current interference in circuit, such as lightning stroke, power switch, etc.
• ESD Protection: Level 3. Prevent electrostatic damage equipment, such as dust electrostatic, electric arc environment etc.
• Surge Protection: Level 3. Protect devices from voltage spikessuch as lightning stroke, power switch, etc.
• Watchdog: Hardware & software dual watchdog to ensure stable operation without downtime.
• Wide Operation Temperature: -35℃~ 70℃.
• Wide Power Input: 9~36V, reverse polarity protection.
• Metal housing, IP30 protection.

tiny size SMT Ethernet modules which can realize data bidirectional transparent transmission between TTL and Ethernet Port. It can also be applied in RS232/ RS485 by level shift circuit. USR-TCP232-S2 is based on Cortex-M0 core. It has characters of low power, fast speed and high efficiency.

• Auto-MDI/MDIX, RJ45 port with 10/100Mbps
• Work mode: TCP Server, TCP Client, UDP Client, UDP Server, HTTPD Client
• Serial port baud rate from 600 bps to 460.8 Kbps, Check bit of None,Odd,Even,Mark and Space
• Self-defined heartbeat package mechanism to ensure connection is reliable, put an end to dead link
• Self-defined registration package mechanism, check connection status and use as custom packet header
• Under TCP Server mode, Client number ranges from 1 to 16; default number is 4
• User can set parameters via webpage, AT command, serial protocol and network protocol; and setting protocol is provided, users can integrate it to their own software
• Support DHCP, automatically obtain an IP address
• Support DNS function and custom setting of DNS server
• The global unique MAC address bought from IEEE, user can define MAC address
• Upgrade firmware via network
• Support virtual serial port and provide corresponding software USR-VCOM
• Restore factory default via software and hardware
• Across the gateway, switches, routers
• Can work in LAN, also can work in the Internet (external network)
• Provide PC TCP/IP socket programming example such as VB,C++,Delphi,Android and IOS
• Support customization

• Industrial data transmission, industrial automation
• security and protection monitoring, public security
• Smart home, power control, environmental monitoring, intelligent agriculture
• Door check on work attendance system, POS system, rice selling system
• Building automation system, power monitoring, self-service banking system, telecom machine room monitoring

        RS232 to 4G CAT-1 DTU Data Converter is an DIN rail based 4G CAT1 data converter DTU unit which gets the data from RS232 and send to cloud server or SMS. It supports Cat-1 network access of the three major domestic operators, has dual-card single-standby function, the product has a built-in patch card (the factory provides free data, and the user can renew), and the external SIM card slot is reserved for users to use; Adopt industrial-grade design standards, support wide-voltage terminal power supply, support FOTA remote self-upgrade and FTP other upgrade protocol. DR154 is the 485 version, DR152 is the 232 version, and DR150 is the TTL (3.0V) version.

Registration Packet + Bi-directional Heartbeat Packet

+ Keep AliveWhen usr-tcp232-410S works as a TCP Client, it will automatically send pre-registered packets for TCP Server

to identify this TCP. Network+Serial port heartbeat packet+Keep Alive,

maintain heartbeat connection with device terminals and servers actively, ensure the stability of the system.

Industrial SolutionBased on TI Cortex M4 Solution, signal processing more efficient and reliable.

Equipped with optimized TCP/IP protocol stack, stable and reliable, Modbus to Ethernet converters USR-TCP232-410S

can realize bi-directional transparent transmission efficiency.

Work Temp: -40 ~85C, Supports hardware watchdog to keep it work stable.

Support TCP Client and UDP Client

Support register package and heartbeat package

Support setting parameters by SMS

Support net transparent transmission mode and UDC mode

Support AT commands

Support RFC2217 similar function

Support remote management

• 2 RJ45 port, one can be WAN or LAN port and another one can be LAN port.
• Support VPN(PPTP) client.
• Support static routing

USR-G786-G is a RS485 Electrical Isolation Protection 4G cellular modem which has perfect functions and covers most of the conventional application scenarios. User can use the cellular modem USR-G786-G to realize data transmission between RS232 / RS485 and 4G network through simple configuration.

Reliable Serial to 4G Cellular Communication. With RS232 or RS485 interfaces, full network coverage, wide temperature and wide voltage, multi center transmission???Provides wireless data communications between field serial devices and the central control system to enable remote control of industrial field sites.G786-G is ideal for M2M and IoT applications including distribution automation, smart metering, water & wastewater, heating, street light monitoring and etc.

 Global Bands, Covering Global Regions
 RS485 Electrical Isolation
 High Reliability, High Rate, Low Latency
 FOTA Remote Upgrade

 This is a 4G GSM GPRS Modem built with quectel EC20 Module supports worldwide LTE, UMTS/HSPA+ and GSM/GPRS/EDGE coverage, ie, 4G, 3G and 2G.

4G LTE Modem

Chipset: Quectel EC20

Input: 5-12v DC

Output: Both RS232 and UART (1.8v Level)

Antenna: SMA connector

Indicators: Red (power) Yellow (network) Green (4G)

SIM: push push regular sim card

• Description
• Reviews (0)

This is a header board with compact size and there is no built in power supply, so you can adopt power from your application board, you must give a power on signal to this board to power on the Modem, or if you want to automatic power ON mean please let us know we will modify and send you. Foot print available for both SMA and UFL antenna connector which makes you more comfort for your design. Power ON and Network Indicator LEDs are placed without cutting the leads at the bottom, so you can use these pins also if you required or simply you can cut it down. Push-in and Pull-out based SIM card slot. So in all the way this board make you more comfort and easy for your GSM/GPRS based applications or Products)

§  Search the Frequency bands automatically

§  Auto baud-rate detection support

§  Configurable baud-rate detection support

§  Easy SIM card interface (Push in / Pull out)

§  Separate indicators for Power ON and Network Status

§  Both UFL and SMA Antenna Connector Provision

§  Input Voltage: 3.7v to 4.1v DC

§  There is no Regulator so you can adopt power supply from your board, but it must meet the above range (for more details please refer M95 datasheet)

§  Current Requirement Min 1A and Max 3A (for more details please refer M95 datasheet)

§  UART Communication interface circuit must be provided to communicate with your application board or processor (for more details please refer M95 datasheet)

USR-WIFI232-602-V2 is a serial wifi converter,used for data transparent transmission. It can connect with serial device for data transmission. And it can send data from rs232 to WIFI in TCP client,TCP server,UDP client and UDP server mode.

• Support 802.11b/g/n wireless standard
• Support TCP/IP/UDP network protocol
• Support RS232 interface with RTS/CTS flow control
• Support work as STA/AP/AP+STA mode
• Support router and bridge mode
• External antenna
• Support transparent transmission mode
• Provide AT+ instruction set for configuration
• Provide friendly web configuration page
• Support heartbeat signal and wifi connection indication
• Support UART auto-frame function
• Max transmission distance: 280 meters (open horizon, 3dbi antenna)
• Support DC adapter and terminal power supply
• Work mode: TCP Server, TCP Client, UDP Client, UDP Server
• Indicator light: Power, Ready, Link, TXD, RXD
• Serial port baud rate from 300 bps to 460800 bps
• Set parameters through webpage
• Reload key to restore factory settings

• WiFi remote control and monitoring, TCP/IP and WiFi coprocessor
• WiFi remote control toy such as aircraft and cars
• WiFi Internet radio, camera, digital photo frame
• Medical instrument, data acquisition, handheld device
• WiFi fatness testing machine, smart card terminal, Smart Home
• Instrument, equipment parameter monitoring, wireless POS machine
• Modern agriculture, military field and other wireless related secondary development applications

USR-DR404 is a Din Rail RS485 to WiFi converter which can realizes bidirectional transparent transmission between RS485 and WiFi / Ethernet.
??? 1-port RS485 to 802.11 a/b/g/n WLAN Serial Device Server
??? Links serial and Ethernet devices to an IEEE 802.11a/b/g/n network
??? Supports TCP server/client, UDP server/client,https client, Virtual COM
??? Supports Modbus RTU to Modbus TCP
??? Supports multiple networking mode with 1 RJ45 ethernet port
??? MQTT special firmware (contact sales)

Specifications

 the low-cost and multi-functional version of Super network Port TTL Ethernet module. It is an embedded serial networking module, whose function is to realize bidirectional transparent transmission between TTL and Ethernet.
User can directly process data interaction through network and device to realize remote data acquisition, remote control and management.

• DHCP DNS, automatically obtain an IP address
• Set parameters through webpage
• Upgrade firmware via network
• Auto-MDI/MDIX, RJ45 port with 10/100Mbps
• Serial port baud rate from 600 bps to 460.8 Kbps, Check bit of None, Odd, Even, Mark and Space
• Work mode: TCP Server, TCP Client, UDP Client, UDP Server
• Support virtual serial port and provide corresponding software USR-VCOM
• Heartbeat package mechanism to ensure connection is reliable, put an end to dead link
• Across the gateway, switches, routers
• Can work in LAN, also can work in the Internet (external network)
• Provide PC TCP/IP socket programming example such as VB,C++,Delphi,Android and IOS
• Support customization

With USR-K2 you can embed intelligence into any electronic product for applications such as:

• Industrial data transmission, industrial automation
• security and protection monitoring, public security
• Smart home, power control, environmental monitoring, intelligent agriculture
• Door check on work attendance system, POS system, rice selling system
• Building automation system, power monitoring, self-service banking system, telecom machine room monitoring