RS232/485 TO WIFI ETH (B) Adapter (25222)
RS232/485 TO WIFI ETH (B) Adapter (25222)
SKU: 1121
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Description
Industrial RS232/485 Serial Server → WiFi and Ethernet
Modbus and MQTT Gateway, metal enclosure, wall-mount and DIN-rail mount, optional PoE function
Overview
This is an industrial IoT gateway / data collector for RS232/485 serial interfaces. The device combines several functions: serial server, Modbus gateway, MQTT gateway, serial port to HTTPD Client converter, etc. With RS232, RS485, WiFi, and Ethernet interfaces, the module performs functions such as: serial port → WiFi, serial port → Ethernet, Ethernet → WiFi, and others.
- Wide power supply range: 6–36 V DC; optional PoE function
- Industrial metal enclosure with wall and DIN-rail mounting
- Compact size, easy installation, high reliability
- Suitable for data collection, IoT gateways, security systems, and device monitoring
Version Options
RS232/485 TO WIFI ETH (B)
RJ45 port without PoE
RS232/485 TO WIFI POE ETH (B)
RJ45 port with PoE support
Specifications
| Parameter | UART-WIFI232-B2 | RS485 TO WIFI/ETH | RS232/485 TO WIFI ETH (B) | RS232/485 TO WIFI POE ETH (B) |
|---|---|---|---|---|
 |
 |
 |
 |
|
| General | ||||
| Description | Embedded module | Industrial DIN-rail module, plastic enclosure | Industrial DIN-rail / wall-mount module, metal enclosure, optional PoE function | |
| Power Supply | DC 3.3 V (±5%) | DC 5–36 V | DC 6–36 V | DC 6–36 V / PoE port |
| Power connection method | Pin header | Screw terminal | DC 5.5mm jack, screw terminal | DC 5.5mm jack, screw terminal, or PoE port |
| Dimensions (L × W × H) | 25.00 × 40.00 × 8.00 mm | 109.66 × 28.00 × 64.71 mm | 84.00 × 64.00 × 24.00 mm | |
| Communication | ||||
| Ethernet | 10/100 Mbps, auto-sensing (via pin header) | 10/100 Mbps, auto-sensing, RJ45 connector | ||
| WiFi | 802.11b/g/n standard | |||
| Serial port | UART | RS485 (ESD/EFT/Surge protection) | RS232 (ESD/EFT protection) RS485 (ESD/EFT/Surge protection) |
|
| Wireless Parameters | ||||
| Frequency band | 2.412 – 2.484 GHz | |||
| WiFi modes | Station / AP / AP+Station | |||
| Security | WPA-PSK / WPA2-PSK | |||
| Encryption type | TKIP / AES | |||
| Transmitter power |
802.11b: +19 dBm (max @ 11 Mbps) 802.11g: +18 dBm (max @ 54 Mbps) 802.11n: +17 dBm (max HT20, MCS7); +17 dBm (max HT40, MCS7) |
|||
| Receiver sensitivity |
802.11b: −89 dBm (at 11 Mbps) 802.11g: −81 dBm (at 54 Mbps) 802.11n: −73 dBm (HT20, MCS7); −71 dBm (HT40, MCS7) |
|||
| Serial Port Parameters | ||||
| Baud rate | 300 – 460,800 bps | |||
| Parity bit | None, Odd, Even, Mark, Space | |||
| Data bits | 5 – 9 bits | |||
| Flow control | RTS/CTS | None | ||
| Software | ||||
| Protocols | TCP / UDP / ARP / ICMP / DHCP / DNS / HTTP / MQTT | |||
| Configuration | Host, web browser, AT commands via serial port | |||
| Communication method | Direct TCP/IP connection, VCOM | |||
| Operating modes | Transparent transmission, serial commands, HTTPD Client, Modbus TCP ↔ Modbus RTU | |||
| Operating Conditions | ||||
| Operating temperature | −40°C … +85°C | |||
| Relative humidity | 5% – 95% (non-condensing) | |||
Main Function
Supports RS232/485 → WiFi and Ethernet conversion, Ethernet → WiFi, etc.
Two Serial Interfaces
Built-in RS232 and RS485 interfaces — for wider application scenarios.
Ethernet and WiFi → RS232 / RS485The Ethernet and WiFi ports can simultaneously send data to both serial ports.
RS232 / RS485 → Ethernet and WiFi
Only one of the RS232 or RS485 ports can simultaneously send data to Ethernet and WiFi.
Multiple Power Supply Methods
- Power over PoE Ethernet port* — complies with IEEE 802.3af standard
- Screw terminal or DC 5.5mm jack — wide voltage range DC 6–36 V
* PoE function available only in the PoE-enabled version.
Industrial Serial Server
Industrial aluminum alloy enclosure. Supports wall-mount and DIN-rail mount. Compact size, easy installation, high cost-effectiveness.
Functional Block Diagram
Transparent Transmission Mode
Supports TCP Server, TCP Client, UDP Server, UDP Client.
Advanced Protocols and Operating Modes
MQTT Gateway: the device can subscribe to messages from other MQTT clients and publish topics to the server. Supports subscribing to 6 messages and publishing 6 topics. View information via terminal or cloud platform.
HTTPD Client: after configuring the HTTP header via AT commands or web page, the module can send data to or receive data from an HTTP server.
Socket Distribution Protocol: sending data to different servers without restarting the device.
Modbus Gateway: supports mutual conversion of Modbus TCP ↔ Modbus RTU.
Support for Multiple Wireless Network Modes
AP, STA, and AP+STA modes.
Support for Multiple Wired Network Modes
APLAN, APWAN, Router, and Bridge modes.
Additional Features
Multiple Configuration MethodsSupports configuration via host, web browser, and serial port.
AT Command Mode
The user can query the module's current status or set parameters by sending AT commands.
Socket Distribution Protocol
In transparent transmission mode, the serial device can send data to a specified Socket connection; network data from each Socket is transmitted to the serial device via the serial port.
Hardware Protection
Power supply reverse polarity protection; communication interface ESD and Surge protection; electrical fast transient (EFT) protection.
Configurable Registration and Heartbeat Packets
The registration packet is used to identify the device to the server, allowing the server to recognize the connected device.
Description
Industrial RS232/485 Serial Server → WiFi and Ethernet
Modbus and MQTT Gateway, metal enclosure, wall-mount and DIN-rail mount, optional PoE function
Overview
This is an industrial IoT gateway / data collector for RS232/485 serial interfaces. The device combines several functions: serial server, Modbus gateway, MQTT gateway, serial port to HTTPD Client converter, etc. With RS232, RS485, WiFi, and Ethernet interfaces, the module performs functions such as: serial port → WiFi, serial port → Ethernet, Ethernet → WiFi, and others.
- Wide power supply range: 6–36 V DC; optional PoE function
- Industrial metal enclosure with wall and DIN-rail mounting
- Compact size, easy installation, high reliability
- Suitable for data collection, IoT gateways, security systems, and device monitoring
Version Options
RS232/485 TO WIFI ETH (B)
RJ45 port without PoE
RS232/485 TO WIFI POE ETH (B)
RJ45 port with PoE support
Specifications
| Parameter | UART-WIFI232-B2 | RS485 TO WIFI/ETH | RS232/485 TO WIFI ETH (B) | RS232/485 TO WIFI POE ETH (B) |
|---|---|---|---|---|
|
|
|
|
|
| General | ||||
| Description | Embedded module | Industrial DIN-rail module, plastic enclosure | Industrial DIN-rail / wall-mount module, metal enclosure, optional PoE function | |
| Power Supply | DC 3.3 V (±5%) | DC 5–36 V | DC 6–36 V | DC 6–36 V / PoE port |
| Power connection method | Pin header | Screw terminal | DC 5.5mm jack, screw terminal | DC 5.5mm jack, screw terminal, or PoE port |
| Dimensions (L × W × H) | 25.00 × 40.00 × 8.00 mm | 109.66 × 28.00 × 64.71 mm | 84.00 × 64.00 × 24.00 mm | |
| Communication | ||||
| Ethernet | 10/100 Mbps, auto-sensing (via pin header) | 10/100 Mbps, auto-sensing, RJ45 connector | ||
| WiFi | 802.11b/g/n standard | |||
| Serial port | UART | RS485 (ESD/EFT/Surge protection) | RS232 (ESD/EFT protection) RS485 (ESD/EFT/Surge protection) |
|
| Wireless Parameters | ||||
| Frequency band | 2.412 – 2.484 GHz | |||
| WiFi modes | Station / AP / AP+Station | |||
| Security | WPA-PSK / WPA2-PSK | |||
| Encryption type | TKIP / AES | |||
| Transmitter power |
802.11b: +19 dBm (max @ 11 Mbps) 802.11g: +18 dBm (max @ 54 Mbps) 802.11n: +17 dBm (max HT20, MCS7); +17 dBm (max HT40, MCS7) |
|||
| Receiver sensitivity |
802.11b: −89 dBm (at 11 Mbps) 802.11g: −81 dBm (at 54 Mbps) 802.11n: −73 dBm (HT20, MCS7); −71 dBm (HT40, MCS7) |
|||
| Serial Port Parameters | ||||
| Baud rate | 300 – 460,800 bps | |||
| Parity bit | None, Odd, Even, Mark, Space | |||
| Data bits | 5 – 9 bits | |||
| Flow control | RTS/CTS | None | ||
| Software | ||||
| Protocols | TCP / UDP / ARP / ICMP / DHCP / DNS / HTTP / MQTT | |||
| Configuration | Host, web browser, AT commands via serial port | |||
| Communication method | Direct TCP/IP connection, VCOM | |||
| Operating modes | Transparent transmission, serial commands, HTTPD Client, Modbus TCP ↔ Modbus RTU | |||
| Operating Conditions | ||||
| Operating temperature | −40°C … +85°C | |||
| Relative humidity | 5% – 95% (non-condensing) | |||
Main Function
Supports RS232/485 → WiFi and Ethernet conversion, Ethernet → WiFi, etc.
Two Serial Interfaces
Built-in RS232 and RS485 interfaces — for wider application scenarios.
Ethernet and WiFi → RS232 / RS485The Ethernet and WiFi ports can simultaneously send data to both serial ports.
RS232 / RS485 → Ethernet and WiFi
Only one of the RS232 or RS485 ports can simultaneously send data to Ethernet and WiFi.
Multiple Power Supply Methods
- Power over PoE Ethernet port* — complies with IEEE 802.3af standard
- Screw terminal or DC 5.5mm jack — wide voltage range DC 6–36 V
* PoE function available only in the PoE-enabled version.
Industrial Serial Server
Industrial aluminum alloy enclosure. Supports wall-mount and DIN-rail mount. Compact size, easy installation, high cost-effectiveness.
Functional Block Diagram
Transparent Transmission Mode
Supports TCP Server, TCP Client, UDP Server, UDP Client.
Advanced Protocols and Operating Modes
MQTT Gateway: the device can subscribe to messages from other MQTT clients and publish topics to the server. Supports subscribing to 6 messages and publishing 6 topics. View information via terminal or cloud platform.
HTTPD Client: after configuring the HTTP header via AT commands or web page, the module can send data to or receive data from an HTTP server.
Socket Distribution Protocol: sending data to different servers without restarting the device.
Modbus Gateway: supports mutual conversion of Modbus TCP ↔ Modbus RTU.
Support for Multiple Wireless Network Modes
AP, STA, and AP+STA modes.
Support for Multiple Wired Network Modes
APLAN, APWAN, Router, and Bridge modes.
Additional Features
Multiple Configuration MethodsSupports configuration via host, web browser, and serial port.
AT Command Mode
The user can query the module's current status or set parameters by sending AT commands.
Socket Distribution Protocol
In transparent transmission mode, the serial device can send data to a specified Socket connection; network data from each Socket is transmitted to the serial device via the serial port.
Hardware Protection
Power supply reverse polarity protection; communication interface ESD and Surge protection; electrical fast transient (EFT) protection.
Configurable Registration and Heartbeat Packets
The registration packet is used to identify the device to the server, allowing the server to recognize the connected device.
