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 AP310i
                                                                AP310i
                                                                WiFi6 AX3000 Dual-band Ceiling AP $61.00
 AP520X
                                                                AP520X
                                                                Outdoor Dual Band $180.00
 AP530X
                                                                AP530X
                                                                Outdoor WiFi 6 AX7800 Tri-band AP $269.00
 AP510
                                                                AP510
                                                                Outdoor-4G-LTE-CPE $72.90
 USR-N720-ETH
                                                                USR-N720-ETH
                                                                Edge IoT Gateway $59.00
![1 Port RS485 Ethernet Device Servers[NEW]](/public/upload/goods/thumb/467/goods_thumb_467_0_40_40.jpeg) USR-N510
                                                                USR-N510
                                                                1 Port RS485 Ethernet Device Servers $45.00
![2 Port Serial Device Server[NEW]](/public/upload/goods/thumb/468/goods_thumb_468_0_40_40.jpeg) USR-N520
                                                                USR-N520
                                                                2 x RS232/RS485 Ports $58.00
![4 Ports RS485 to Ethernet Converters[NEW]](/public/upload/goods/thumb/466/goods_thumb_466_0_40_40.jpeg) USR-N540
                                                                USR-N540
                                                                4 x RS485 Ports $95.00
 USR-TCP232-410s
                                                                USR-TCP232-410s
                                                                RS232/RS485 $41.00
 USR-K5
                                                                USR-K5
                                                                TI Cortex M0 Processor $10.00
 USR-K6
                                                                USR-K6
                                                                TI Cortex M0 Processor $11.00
 USR-K7
                                                                USR-K7
                                                                TI Cortex M4 Processor $19.00
Product Name:1-port RS485 to Ethernet Converters





Connect to PLC, SCADA system or user’s 
 private server to achieve local or remote motoring.
Multi-Host Modbus Polling 
 Modbus RTU to Modbus TCP

Multi-user Access

Multi-device Management

Virtual-COM Software
 This feature can infinitely extend the serial cable, 
 allowing communication to no longer 
 be limited by distance.

Point-to-Point Communication
 Using this method, it is possible to achieve 
 data communication between two serial devices.

Heartbeat Packet
 Server can detect abnormal disconnection from the client 
 using this feature (304 as an TCP client)

Customized RFC2217
 Users can dynamically modify the baud rate, stop bit, 
 data bits and parity bit of the TCP232-304 by sending 
 PUSR customized protocol over the network.

Registration Packet
 The server can identify different clients by using 
 registration packets.


By connecting the traffic lights to serial device server, the control 
 center can collect and process traffic data on-site through Ethernet,
 and the collected data can also provide accurate quantitative basis for 
 traffic command and dispatch and city traffic rules.

Connecting the serial server to the gate, it is convenient for the control 
 center to remotely control the gate switch through Ethernet.
 Multiple serial servers can be used to connect other serial cameras,
 weighing instruments,LED displays,RFID card readers,
 vehicle induction coils,ticket printers and other peripherals,
 enrichin more application scenarios.





| Model | USR-TCP232-302 | USR-TCP232-304 | USR-TCP232-306 | 
| Processor | ARM Cortex-M0, 48MHz | ||
| Power Supply | 
 | 
 | 
 | 
| Power Input | DC: 5.0~7.0 V, Connector: DC 5.5*2.1 mm | DC: 5.0~7.0 V, Connector: DC 5.5*2.1 mm | DC: 5.0~36.0 V, Connector: 5.5*2.1 mm & 2 pin terminal block | 
| Consumption | |||
| Ethernet Port | 
 | 
 | 
 | 
| Ethernet Port | 1 x RJ45, 10/100Mbps, auto MDI/MDIX | ||
| Serial Port | 
 | 
 | 
 | 
| Serial Port | RS232 | RS485 | RS232/485/422(Not work at the same time) | 
| Baud Rate | 600~230.4 Kbps | ||
| Data Bits | 5,6,7,8 | ||
| Stop Bit | 1,2 | ||
| Parity Bit | None, Odd, Even, Mark, Space | ||
| Serial Packeting | Packeting Time: Four-byte sending time Packeting Length: 400 Bytes | ||
| Serial Packet Cache | Receive:2KBytes | ||
| Reload Button | √ | ||
| Physical Parameters | 
 | 
 | 
 | 
| Dimension(L*W*H) | 66.3*70.0*25.0 mm | 73.2*70.0*25.0 mm | 98.0×86.0×25.0 mm | 
| Installation | Wall Mounting | ||
| Operating Temp | -25~75℃ | ||
| Storage Temp | -40~105℃ | ||
| Operating Humility | 5%~95% RH(non-condensing) | ||
| Storage Humility | 5%~95% RH(non-condensing) | ||
| Indicators | None | None | PWR, WORK,LINK,TX,RX | 
| Software | |||
| Network Protocol | IP, TCP/UDP, DHCP, RCMP, HTTP, IPv4, DNS | ||
| IP Mode | DHCP, STATIC IP | ||
| DNS Service | √ | ||
| Config Method | AT Command, Built-in webpage, Config Software, Config Protocol | ||
| Work Mode | TCP Server/TCP Client/UDP Server /UDP Client/Httpd Client | ||
| Modbus Gateway | Modbus RTU to Modbus TCP, Multi-host Modbus Polling | ||
| User-Defined Webpage | √ | ||
| TCP Server | 16 clients | ||
| Network Packet Cache | Send: 6K Bytes Receive: 4K Bytes | ||
| Additional Features | RFC2217 Similar, Heartbeat Packet, Registration Packet, Index, No Data Restart | ||
| Others | |||
| EMC Level | IEC61000, Level 3(Surge, ESD, EFT) | ||
| Certificate | CE | ||
Monday to Friday 8:30-18:00 in Beijing time. Message us online for a quick response when we are on-work. Or you can leave a message. Our sales will contact you as soon as possible. You can get free technical support & professional support for your project on our technical support h.usriot.com. Get in touch with us via email at sales@usriot.com. We want to help with any questions you have.
We will deliver goods as soon as possible after we received the order. The order generated on weekend and holidays will be handled after back. We ship the goods with the following carriers TNT, DHL, FedEx, UPS, shipping agent.
We provide one year's warranty of modules and two year's warranty of cellular routers, cellular modems, serial device servers for any reason. If you believe the item is defective and under warranty, please submit a Return or Exchange request on the product's support page, or contact us at support@usriot.com.
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