Usage Scenario
Industrial Automation — PLC Alternative Relay Card
NetRelay offers a practical alternative to expensive PLC installations in factory and facility automation. As a local network automation device, it reads sensors, triggers relays and transfers data to SCADA/MES systems with MQTT integration — without the need for cloud.
- • Field-ready I/O with 4 digital inputs + 4 relays (250V / 10A)
- • Connecting to existing industrial devices via RS485 / Modbus
- • Monitoring network health of critical machines with Ping Watchdog
- • Card-to-board scenario with point-to-point dry contact transmission
Why NetRelay instead of PLC?
Many automation scenarios do not require a full PLC programming environment. NetRelay; Deploys in minutes with web interface, HTTP API and MQTT. You name I/O resources, define conditional triggers, and manage the sensor-relay loop locally on the production line.
Typical factory scenarios
Production counter (barcode / serial port), energy panel relay control, automatic restart after emergency stop, barrier opening with plate recognition and synchronization with dry contact transmission between two lines.