Product description: 8-channel relay module with optoisolation - contacts 10 A / 250 V AC / 30 V DC - coil 7 V - 36 V - Modbus PoE - Waveshare 24964
The Waveshare relay module allows you to control 8 relay channels via Ethernet. It supports popular industrial protocols such as Modbus RTU and Modbus TCP , as well as MQTT, TCP/UDP, and HTTP. The module can be powered directly via IEEE 802.3af-compliant PoE , significantly simplifying installation. Alternatively, it can be powered via a DC socket or screw-type connector within a range of 7V to 36V . Built-in optoelectronic isolation protects the device from interference, and the high-quality relays allow you to control devices with voltages up to 250V AC or 30V DC and currents up to 10A . The module is housed in a durable ABS housing suitable for DIN rail mounting , and numerous LEDs indicate the status of the Ethernet port, MCU, and data transmission. The device is ideal for industrial, home, and smart agricultural applications.
8 channel relay module with optoisolation - contacts 10 A / 250 V AC / 30 V DC - coil 7 V - 36 V - Modbus PoE - Waveshare 24964. 
The Waveshare relay module allows you to control 8 relay channels via Ethernet.Special features
- 8 relays with NO/NC outputs: control of devices up to 250 V AC / 30 V DC and 10 A
- Multiple protocol support: Modbus RTU, Modbus TCP, MQTT, TCP/UDP, HTTP
- PoE or DC power supply from 7V to 36V: IEEE 802.3af compliant, no additional cabling required
- Optoelectronic isolation: protects circuits from high-voltage interference
- DIN rail mounted housing: easy installation and safe use
- Status LEDs: Indicate MCU, network, and data transmission activity
- Versatile network configuration options: Web-based and software configuration; DHCP and DNS support for easy network integration
- Flash-on/flash-off function: temporary switching on of the relay without the need to switch it off manually
Connection example
The relays can switch a voltage of 230 V AC or 30 V DC with a maximum current of 10 A. The relay coil is powered by a voltage from 1 V to 36 V.
Technical specifications of the relay module
- Number of relays: 8
- Connectors: 1NO 1NC
- Maximum relay load: 10 A 250 V AC / 30 V DC
- Communication protocols: Modbus RTU, Modbus TCP, MQTT, TCP Server/Client, UDP, HTTP
- Power supply:
- PoE (IEEE 802.3af)
- DC jack 5.5/2.1mm (7V to 36V)
- Coil supply voltage: 7 V to 36 V
- Isolation: optoelectronic (relay protection)
- Protection: short circuit protection, reverse polarity protection
- LED indicators: RUN, STA, TXD, RXD
- Housing: ABS, DIN rail mounting
- Dimensions: 125 x 100 x 40 mm
Supports popular industrial protocols Modbus RTU and Modbus TCP, as well as MQTT, TCP/UDP, HTTP. 
