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Small green circuit board with two black relay blocks and an Ethernet port

ALSEYE

ALSEYE 2-Channel Modbus TCP Relay 5V 10A 250V AC

SKU CH-SGW0-8T9P8

A two-channel Modbus TCP relay module that switches 250 V AC at 10 A or 30 V DC at 5 A from a 5 V supply

  • Two-channel 10 A / 250 V AC switching for mains loads
  • Cortex-M3 with W5500 chip handles Modbus TCP, TCP client/server and UDP
  • Four simultaneous TCP clients plus custom heartbeat and auto-recovery
  • C++ host source code supplied for router watchdog and remote control
  • Wide -40 °C to 80 °C operating range suits industrial cabinets

Two-Channel Modbus TCP Relay

The ALSEYE module provides two independently controlled relay channels that switch up to 250 V AC at 10 A or 30 V DC at 5 A. A Cortex-M3 microcontroller and W5500 network chip handle Modbus TCP, TCP server, TCP client and UDP modes with up to four simultaneous client connections. The board operates from a 5 V supply drawing at least 1 A and measures 3.2 by 2 by 1.2 inches.

Suits integrators building remote power control

Developers who need scriptable on/off commands, state read-back and delay timing over Ethernet will find the supplied C++ source code and online firmware update useful. Installations requiring more than two switched circuits, higher contact ratings or wireless connectivity should look at other solutions because this unit is limited to two channels and wired Ethernet only.

Bundled C++ source and configuration tools

Host-side C++ examples demonstrate network connection handling, automatic router-reconnect and cross-gateway remote control. The configuration utility lets you set a custom device name, heartbeat interval and Modbus parameters without recording IP addresses for every node, speeding up multi-device deployments.

Highlights

  • Two-channel 10 A / 250 V AC switching for mains loads
  • Cortex-M3 with W5500 chip handles Modbus TCP, TCP client/server and UDP
  • Four simultaneous TCP clients plus custom heartbeat and auto-recovery
  • C++ host source code supplied for router watchdog and remote control
  • Wide -40 °C to 80 °C operating range suits industrial cabinets

Specifications

No published specifications for this item yet.

Questions about this item

What power supply do I need to run the 5 V relay module?

Provide a stable 5 V DC source capable of at least 1 A to power the board.

Can the module switch the 250 V AC / 10 A loads I already have on site?

Yes, each of the two channels is rated for 250 V AC at 10 A resistive load.

How do I confirm the relays are responding after wiring and network setup?

Send "read1" or "read2" over the Modbus TCP connection; the module replies "on1"/"off1" or "on2"/"off2" showing the current state.

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