Waveshare RS485 to WiFi Ethernet Gateway Rail Mount Modbus MQTT

Many factories still rely on old RS485 serial devices. Those devices cannot talk to modern cloud services or Wi-Fi networks. When the data stays locked in a serial line, you lose real-time monitoring and remote control. The Waveshare RS485 to WiFi Ethernet Gateway Rail Mount Modbus MQTT turns that old serial link into a network-ready connection, letting you send and receive data over Ethernet or Wi-Fi with just a few clicks.

Waveshare RS485 to WiFi Ethernet Gateway Rail Mount Modbus MQTT with Waveshare

You need a bridge that works without rewriting your PLC code. This gateway reads RS485 signals, packages them into Modbus MQTT, and pushes them through Ethernet or Wi-Fi. It solves the problem of isolated machines that cannot be accessed remotely. With Waveshare you get a compact rail-mount unit that fits into standard control panels and gives you instant network visibility.

Usages

Use it in a factory floor to connect legacy sensors to a SCADA system. Install it in a building automation panel to let HVAC controllers report status to a cloud dashboard. It also works for remote water-meter reading where the meter only offers RS485 output. The device can be placed on a DIN rail, making it easy to add to any existing enclosure.

Benefits

• Turn old serial data into modern network traffic instantly.
• Monitor equipment from anywhere using MQTT or HTTP.
• Save time and money by avoiding new hardware purchases.
• Reduce wiring complexity with wireless or Ethernet options.
• Secure communication with WPA2 and AES encryption.

Key Features

• RS485 interface with screw terminals and surge protection.
• Power input 5 ~ 36 V DC via screw terminal.
• 10/100 M auto-negotiation RJ45 Ethernet port.
• 802.11b/g/n Wi-Fi with AP, Station, or AP+Station mode.
• WPA-PSK / WPA2-PSK security and TKIP/AES encryption.
• Supports Modbus TCP to RTU, transparent transmission, and HTTPD client.
• Baud rates from 300 to 460800 bps, 5-9 data bits, multiple parity options.
• Operating temperature -40 C to 85 C, storage -45 C to 125 C.
• Humidity range 5 % to 95 % RH, flame-retardant PC+ABS case.
• Full TCP/UDP/ARP/ICMP/DHCP/DNS/HTTP/MQTT protocol stack.
• Configuration via web browser, host command, or serial AT commands.
• Compact size 109.66 28 64.71 mm, rail-mount ready.

Specifications