01 / IP NETWORK
Serial equipment to SCADA or a server
Y201-R example: forward serial data over TCP/UDP, or enable Modbus RTU-to-TCP for a Modbus TCP host. Wi-Fi and cellular models use their own network uplinks.
Industrial Serial Gateways
Connect RS232 and RS485 equipment to Ethernet, Wi-Fi, 4G or LoRa.
Read meters, bring PLCs onto an IP network or replace a wired serial link. Choose a gateway by the network at your site and the serial interfaces on your equipment.
- Single-port and 2–8 port models
- TTL options on selected models
What do you need to connect?
Start with your equipment and the connection available at the site.
Meters and PLCs on a LAN
Bring serial equipment into a wired SCADA or building-management network.
Compare Ethernet models
Remote stations over 4G
Send serial data from sites with cellular service and no wired Internet connection.
Compare 4G models
Several serial buses in one cabinet
Connect separate instruments through a multi-port Ethernet gateway.
Compare Ethernet models
Serial communication across a site
Bridge serial devices over LoRa where a new cable run is impractical.
Compare LoRa modelsTwo paths for serial data
IP gateways connect equipment to a host network. LoRa DTUs bridge serial communication between two locations.
02 / PRIVATE RADIO LINK
Serial communication over LoRa
Connect a compatible LoRa DTU at each end and match the serial and radio settings. Y201-L and Y211-L carry serial data; cloud access needs an additional IP connection.
Choose your network and serial ports
Compare the network connection, physical serial interfaces and model-specific functions.
11 models · all networks
One serial device on an IP network
Y201-R, Y201-W and Y201-G each provide one physical serial port. Choose the interface when ordering.
Two, four or eight independent serial channels
Keep separate serial buses on one gateway. Y202 offers mixed RS232/RS485 SKUs; Y204 and Y208 offer all-RS232 or all-RS485 SKUs.
Ethernet
Y202-R
2 serial ports2×RS232, 2×RS485 or one of each
Two independent serial channels over Ethernet.
Wi-Fi
Ethernet
Ethernet
Y208-R
8 serial ports8×RS232 or 8×RS485
Eight independent serial channels; dual Ethernet ports.
Serial data over a private LoRa link
Use a compatible LoRa DTU at each end. Radio range depends on antenna placement, mounting height, walls and metal structures.
Cellular gateways and multi-link routing
Y212-G adds local I/O to cellular serial networking. Y212-GWR adds Ethernet and Wi-Fi routing with automatic uplink switching.
4G
Y212-G
Main serial + secondary UARTRS232 / RS485; TTL on current Qualcomm hardware
LTE Cat.4, two digital I/O and one analog input.
4GWi-FiEthernet
Y212-GWR
Main serial; optional secondary UARTRS232 / RS485; TTL on some versions
LTE Cat.4, 2.4 GHz Wi-Fi and two RJ45 ports; uplink failover.
Compare all 11 models
| Model | Network | Physical serial connection | Interfaces | DC supply |
|---|---|---|---|---|
| Y201-R | Ethernet | 1 serial port | RS232 or RS485 or TTL | 5–36 VDC |
| Y201-W | Wi-Fi | 1 serial port | RS232 or RS485 or TTL | 5–36 VDC |
| Y201-G | 4G | 1 serial port | RS232 or RS485 or TTL | 9–36 VDC |
| Y202-R | Ethernet | 2 serial ports | 2×RS232, 2×RS485 or one of each | 9–36 VDC |
| Y202-W | Wi-Fi | 2 serial ports | 2×RS232, 2×RS485 or one of each | 5–36 VDC |
| Y204-R | Ethernet | 4 serial ports | 4×RS232 or 4×RS485 | 9–36 VDC |
| Y208-R | Ethernet | 8 serial ports | 8×RS232 or 8×RS485 | 9–36 VDC |
| Y201-L | LoRa | 1 serial port | RS232 or RS485 or 3.3 V TTL | 9–36 VDC |
| Y211-L | LoRa | 1 serial port | RS232 or RS485 or 3.3 V TTL | 9–36 VDC |
| Y212-G | 4G | Main serial + secondary UART | RS232 / RS485; TTL on current Qualcomm hardware | 6–28 VDC |
| Y212-GWR | 4G / Wi-Fi / Ethernet | Main serial; optional secondary UART | RS232 / RS485; TTL on some versions | 6–26 VDC |
Match the gateway to your equipment
Serial interface
RS232, RS485 or TTL; physical port count, baud rate, parity and device addresses.
Data path
Transparent serial data or Modbus RTU-to-TCP; host protocol and server endpoint.
Site network
LAN or Wi-Fi access, deployment country and cellular operator, or LoRa distance and obstructions.
Power and installation
Supply voltage, cabinet space, temperature and antenna mounting location.
Technical details and purchase options
Read the model documents for wiring and setup, check cellular coverage or browse available products.
FAQ
Serial ports, network protocols, LoRa links and cellular model selection.
Which network connection should I choose?
Ethernet suits a site with a wired LAN. Wi-Fi suits an existing WLAN. 4G needs a suitable SIM, operator coverage and supported cellular bands. LoRa connects serial equipment across a private radio link; Internet access requires an additional network bridge.
Does a gateway convert Modbus RTU to Modbus TCP?
Y201-G/W/R and Y202/Y204/Y208 IP models support Modbus RTU-to-TCP conversion when enabled. Transparent mode forwards serial data without this conversion. Y201-L and Y211-L carry serial data over LoRa; they do not provide an Ethernet Modbus TCP endpoint.
Are network sockets the same as serial ports?
No. Socket A and Socket B are logical network connections. Each Y201 model has one physical serial port. Y202 has two, Y204 has four and Y208 has eight independent serial ports.
Which serial interfaces and baud rates are supported?
Each Y201 model, including Y201-W, has one physical serial port. Choose the RS232, RS485 or TTL interface when ordering. Y201-G, Y201-W and Y201-L list 1,200–460,800 bps, with a default of 9,600 bps. The Y201-R specification lists a default of 9,600 bps; ask us to check a different baud rate. Y212 serial settings differ by model.
What is the difference between Y201-L and Y211-L?
Both bridge one serial port over LoRa in the 410–493 MHz band. Y201-L lists 22 dBm and up to 5 km; Y211-L lists up to 30 dBm and about 10 km in open areas. Walls, metal structures, antenna placement and mounting height affect the usable range. Choose the frequency and power settings permitted at the deployment site.
What does Y212-GWR add to a 4G serial gateway?
Y212-GWR combines LTE Cat.4, 2.4 GHz Wi-Fi and two Ethernet ports. One RJ45 port is fixed LAN; the second defaults to WAN and can switch to LAN. Uplink switching uses WAN, Wi-Fi and 4G. Y212-G provides cellular serial access with two digital I/O and one analog input.
Will the cellular models work in my country?
Country and operator support follows the installed modem bands. The current Y201-G and Y212 models do not cover several common North American LTE bands, and coverage in Europe and Australia needs an operator-specific check. Send the deployment country and operator, or use the country coverage guide.
Tell Us Your Application
What equipment do you need to connect? Tell us the serial interface, network at the site and deployment country. We’ll help you choose a gateway — no model number needed.