Details
Ethernet Port Communication, Modbus Protocol, PoE Power Supply

This product is an industrial 30-ch relay module controlled via Ethernet port, adopts Modbus RTU/Modbus TCP protocols, supports PoE power supply, also comes with an ABS rail-mount case.
The Modbus POE ETH Relay 30CH is very easy to use. Due to its fast communication, stability, reliability, and safety, it is an ideal choice for industrial control equipments and/or applications with high communication requirements.
- Features flash-on, flash-off function, by passing argument to the command, it is possible to turn on the relay for a while and then close it automatically
- Supports DC 7~36V wide range power input and PoE power supply
- Supports relay control through MQTT protocol, comes with Alibaba Cloud MQTT application demo
- Onboard Optocoupler isolation, prevent the relay from being interfered by high-voltage circuit
- Adopts dedicated relay driver chip, with built-in flyback diode protection, for stronger and more stable driving ability
- Reverse-proof circuit, prevent the circuit from being damaged accidentally by incorrect connection
- High quality relay, contact rating: ≤10A 250VAC/30VDC
- Rail-mounted ABS plastic enclosure, easy to install, safe to use
- 4 LEDs and Network indicators for indicating the MCU status and signal transceiving status
Supports Sending Modbus RTU/TCP Protocol Commands Via Ethernet Port To Control Relay And Various Devices

Supports TCP Server / TCP Client / UDP Mode / UDP Multicast / HTTP / MQTT
Supports Modbus RTU protocol/Modbus TCP protocol

Supports software and Web Browser Configuration, Obtaining Dynamic IP Via DHCP, connecting to domain name server via DNS protocol

DC Power port: directly uses a power plug for power supply; Screw terminal: DC 7~36V wide range power input; PoE port: IEEE 802.3af PoE compliant

With Multiple LED Indicators, Easy To Monitor The Operating Status

RUN | Ethernet port indicator, blinking when Ethernet port normally working |
---|---|
STA | MCU indicator, blinking when the MCU normally working |
TXD | TX indicator, lights up when sending data |
RXD | RX indicator, lights up when receiving data |
Ethernet port Green Indicator | Lights up when the connection is established |
Ethernet Port Yellow Indicator | Data activity indicator, blinking when transmitting data |
Contact rating of the onboard relay up to 10A 250VAC/30VDC
Directly controlling 220VAC home appliances, or devices below 30VDC

Rail-mounted ABS plastic enclosure, easy to install, safe to use






* Resources for different product may vary, please check the wiki page to confirm the actually provided resources.
product | Communication parameters | Relay type | Output control | Input control | Power range | Dimensions |
---|---|---|---|---|---|---|
Modbus RTU Relay | RS485 port | 10A Universal Relay | 8-ch | - | 5V | 145×90×40mm |
Modbus RTU Relay (B) | 10A Universal Relay | 8-ch | - | 7V~36V | 175×90×40mm | |
Modbus RTU Relay (C) | 10A Latching Relay | 8-ch | - | 7V~36V | 145×90×40mm | |
Modbus RTU Relay (D) | 10A Universal Relay | 8-ch | 8-ch | 7V~36V | 175×90×40mm | |
Modbus RTU Relay (E) | 30A High Current Relay | 8-ch | - | 7V~36V | 200×110×60mm | |
Modbus RTU Relay 4CH | 30A High Current Relay | 4-ch | - | 7V~36V | 145×90×40mm | |
Modbus RTU Relay 16CH | 10A Universal Relay | 16-ch | - | 5V | 200×110×60mm | |
Modbus RTU Relay 32CH | 10A Universal Relay | 32-ch | - | 7V~36V | 300×110×60mm | |
Modbus POE ETH Relay | Ethernet port (PoE support) | 10A Universal Relay | 8-ch | - | 7V~36V | 145×90×40mm |
Modbus POE ETH Relay (B) | 10A Universal Relay | 8-ch | 8-ch | 7V~36V | 175×90×40mm | |
Modbus POE ETH Relay (C) | Dual Ethernet ports (PoE support) | 10A Universal Relay | 8-ch | 8-ch | 7V~36V | 175×90×40mm |
Modbus POE ETH Relay 30CH | Ethernet port (PoE support) | 10A Universal Relay | 30-ch | - | 7V~36V | 300×110×60mm |
Weight: 0.886 kg
Quick Overview
Modbus POE ETH Relay 30CH x1
