Industrial 8-channel Ethernet PoE Modbus RTU/TCP relay module
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Industrial 8-channel Ethernet PoE relay module (Modbus RTU/TCP)
8 relays controlled via Ethernet, power supply PoE IEEE 802.3af or DC 7–36V. Support for Modbus TCP, Modbus RTU and MQTT. DIN rail mounting, optocoupler isolation, contact rating up to 10A (250VAC / 30VDC).
Key features
- 8 relays controlled via Ethernet.
- Protocols: Modbus TCP, Modbus RTU, MQTT.
- Power supply: PoE (IEEE 802.3af) or DC 7–36V (5.5/2.1mm jack + screw terminal).
- Optocoupler isolation for stable operation.
- Contact rating: up to 10A 250VAC / 30VDC.
- Flash-on / Flash-off functions (timed closing and automatic opening after a set time).
- ABS case for mounting on DIN rail.
- LED indicators for communication, operation status, and relay state.
Power supply (PoE or DC)
The module can be powered in three ways: via PoE (IEEE 802.3af) via RJ45 twisted pair, via DC 5.5/2.1 mm jack or via screw terminal (range 7–36V DC). Thanks to PoE, a single cable provides both data transmission and power.
Diagnostics and LED indicators
The housing features clear LED indicators for easy diagnostics: RUN (Ethernet), STA (MCU), TXD/RXD (data transmission/reception) and LEDs showing the state of individual relays.
Relay connection
Application examples
Suitable for Smart Home and automation: lighting control, device power control, router restarts, roller shutter/actuator control, integration with Modbus or MQTT systems.
Dimensions
Technical specification
- Power supply: PoE, DC 5.5/2.1 mm jack, screw terminal (7–36V)
- Communication interface: Ethernet (PoE IEEE 802.3af compliant)
- Number of relays: 8
- Contact configuration: 1NO 1NC (NO/NC)
- Contact rating: ≤10A 250VAC / 30VDC
- Protocols: Modbus RTU, Modbus TCP, MQTT
- LED indicators:
- RUN: Ethernet status (flashes in 2-second cycles during normal operation)
- STA: MCU status (flashes during proper microcontroller operation)
- TXD: data transmission
- RXD: data reception
Kit contents
- Modbus POE ETH Relay module - 1 pc.
Note: The product supports PoE power, and a power adapter is not included in the kit by default. If powering traditionally, an external 12V 2A power adapter is recommended.
Safety
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