Add to favorites
waveshare RS232/485 to WiFi and Ethernet Converter Serial Server, Modbus Gateway, MQTT Gateway,Serial Port to HTTPD Client, Allow Serial Port to WiFi, Serial Port to Ethernet, Ethernet to WiFi — Open-Box, 19% Off
Brand: waveshare
Condition: Used - Mint
$3023
$3743
-19% Save $720
Updated: 12 days ago
Description
This is an RS232/485 device data acquisitor / IoT gateway designed for industrial environment. It combines multi functions in one, including serial server, Modbus gateway, MQTT gateway, serial port to HTTPD Client, etc
With RS232, RS485, WIFI and Ethernet interfaces, the module can realize functions such as serial port to WIFI, serial port to Ethernet, Ethernet to WIFI and so on. Support Screw Terminal and DC 5.5 Power Port for Power Supply, DC 6~36V Wide Voltage Range Input
Support transparent transmission mode: Support TCP Server, TCP Client, UDP Server, UDP Client
Support multi wireless networking methods: Support AP mode, STA mode, and AP+STA mode. Support multi wired networking methods: Support APLAN, APWAN, Router, and Bridge mode
Multi Configuration Methods: Supports muliti configuration methods such as hosts, Web Browser and serial port Configuration. AT Command Mode: The user can query the current status of the module or set related parameters by sending AT commands
RS232/485 to WiFi and Ethernet Converter combines multi functions in one, including serial server, Modbus gateway, MQTT gateway, serial port to HTTPD Client, etc. Supports serial port to WIFI, serial port to Ethernet, Ethernet to WIFI.
Specifications
1. Outline
Power supply: DC 6~36V
Power supply method: DC 5.5 power port, screw terminal
Dimensions (L × W × H) : 84.00×64.00×24.00mm
2. Communication
Ethernet: 10 / 100M auto-negotiation RJ45 connector
WIFI: 802.11b/g/n compliant
Serial port: RS232 (ESD/EFT)RS485 (ESD/EFT/surge protection)
3. Wireless specification
Frequency Band : 2.412 ~ 2.484 GHz
Wireless network: Station / AP / AP+Station Mode
Security mechanism: WPA-PSK / WPA2-PSK
Encryption type: TKIP / AES
Transmitting power:
802.11b: +19dBm (Max.@11Mbps)
802.11g: +18dBm (Max.@54Mbps)
802.11n: +17dBm (Max.@HT20, MCS7); +17dBm (Max.@HT40, MCS7)
Receiving sensitivity:
802.11b: -89dBm (@11Mbps)
802.11g: -81dBm (@54Mbps)
802.11n: -73dBm (@HT20, MCS7); -71dBm (@HT40, MCS7)
4. Serial specification
Baudrate: 300 ~ 460800 bps
Parity bit: none, odd, even, mark, space
Data bit : 5 ~ 9 bits
5.Software
Protocol: TCP / UDP / ARP / ICMP / DHCP / DNS / HTTP / MQTT
Configuration: host, web browser, serial AT command
Communication method: TCP/IP direct communication, VCOM
Operating mode: Transparent transmission, serial command, HTTPD Client, Modbus TCP to Modbus RTU
6.Environment requirement
Operating temperature: -40℃ ~ 85℃
Humidity range: 5% ~ 95% relative humidity
Online Development Resources ://bit.ly/3L6Bk6m
Package Content
RS232/485 TO WIFI ETH (B) x1
2.4G WiFi antenna x1
Rail-mount buckle x1
Screwdriver x1
Screws pack x1
Specifications
1. Outline
Power supply: DC 6~36V
Power supply method: DC 5.5 power port, screw terminal
Dimensions (L × W × H) : 84.00×64.00×24.00mm
2. Communication
Ethernet: 10 / 100M auto-negotiation RJ45 connector
WIFI: 802.11b/g/n compliant
Serial port: RS232 (ESD/EFT)RS485 (ESD/EFT/surge protection)
3. Wireless specification
Frequency Band : 2.412 ~ 2.484 GHz
Wireless network: Station / AP / AP+Station Mode
Security mechanism: WPA-PSK / WPA2-PSK
Encryption type: TKIP / AES
Transmitting power:
802.11b: +19dBm (Max.@11Mbps)
802.11g: +18dBm (Max.@54Mbps)
802.11n: +17dBm (Max.@HT20, MCS7); +17dBm (Max.@HT40, MCS7)
Receiving sensitivity:
802.11b: -89dBm (@11Mbps)
802.11g: -81dBm (@54Mbps)
802.11n: -73dBm (@HT20, MCS7); -71dBm (@HT40, MCS7)
4. Serial specification
Baudrate: 300 ~ 460800 bps
Parity bit: none, odd, even, mark, space
Data bit : 5 ~ 9 bits
5.Software
Protocol: TCP / UDP / ARP / ICMP / DHCP / DNS / HTTP / MQTT
Configuration: host, web browser, serial AT command
Communication method: TCP/IP direct communication, VCOM
Operating mode: Transparent transmission, serial command, HTTPD Client, Modbus TCP to Modbus RTU
6.Environment requirement
Operating temperature: -40℃ ~ 85℃
Humidity range: 5% ~ 95% relative humidity
Online Development Resources ://bit.ly/3L6Bk6m
Package Content
RS232/485 TO WIFI ETH (B) x1
2.4G WiFi antenna x1
Rail-mount buckle x1
Screwdriver x1
Screws pack x1
Sold by
Amazon Warehouse
Official Amazon outlet for open-box & returned items
- Backed by Amazon's A-to-Z Guarantee
- 30-day return policy
- Ships from Amazon fulfillment centers
- Price verified on Amazon
Product Details
- SKU:
- awhd-us-b0ch72ww4v
- Model:
- UART-WIFI232-B2
- Country:
- US
- ASIN:
- B0CH72WW4V
Shopping Smarter
Common questions about buying open-box and refurbished.
Why buy refurbished or open-box?
Refurbished and open-box products offer the same performance as new at a fraction of the price. You're already saving $7 on this listing. They've been inspected, tested, and are ready to use — the only difference is the price tag. Buying refurbished also reduces electronic waste, extending product life cycles and keeping functional devices out of landfills.
What's the difference between open-box and refurbished?
Open-box products are customer returns that have been inspected and confirmed functional. They may show little to no use — often the item was returned simply because the buyer changed their mind. Refurbished products have been professionally repaired or restored by technicians, tested to meet or exceed manufacturer specifications, and sometimes come with a warranty. Both are a smart alternative to buying new.
Why use OpenBoxFox?
Finding refurbished deals is time-consuming — you'd have to check Amazon Warehouse, Reebelo, Dyson Outlet, and others separately for waveshare products. OpenBoxFox aggregates these listings in one place, so you can compare and find the best deal without the legwork. We update pricing daily so you always see current availability and real savings.
Is it safe to buy refurbished?
Yes. Products listed on OpenBoxFox come from established retailers like Amazon, Reebelo, and Dyson — not unknown third-party sellers. Each retailer has buyer protection policies, return windows, and in some cases warranties. You get the price advantage of used goods with the purchase security of a known retailer.










![SABRENT USB 2.0 to Serial (9-Pin) DB-9 RS-232 Adapter Cable 6ft Cable [FTDI Chipset] (CB-FTDI) by SABRENT - Used condition - US$24.99](https://m.media-amazon.com/images/I/41e7GAKHH-L._SX600_.jpg)



