Hardware / Relay node
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Relay node
Four switched sockets that check they really turned on.
Switches fans, misters, heaters, lights and pumps. Each channel measures its current, so the app can show that equipment really runs — and the node keeps its schedule if the Hub goes silent.
Commercial (Hub)
Measures
What it reads
Current per channel
AACS712
Controls
What it switches
4 relay outputs
Auto, Manual or Timer — with welded-relay and no-load alerts.
Inside
Main parts
- ESP32 WROOM or S3
- 4 isolated relays
- ACS712 current sensor per channel
- RS-485 transceiver
Specs
Details
- Link
- RS-485 Modbus RTU, 115200 8N1, to the Hub
- Power
- 12 V from the bus
- Isolation
- Opto-isolated relays, separate relay ground
- If the Hub is silent
- Keeps running its own schedule
Set up
In the app
- Open the Hub in the app
- Tap Add node
- Plug the node into the bus — the Hub finds it
- Name it and pick where it sits
- Tell the app what is plugged into each socket and its watts
DIY
Build it yourself
Use a standard ESP32 board and install Kinokora firmware from your browser.
| Board | Pins | Firmware | |
|---|---|---|---|
| ESP32 WROOM DevKit | — | actuator_node | Install → |
Safety. Mains wiring (230 V) must be done by a licensed electrician. Use a fuse or MCB rated for each load, and keep water away from connections. Read the safety guide.
Compliance
Certificates
- WPC ETA / BIS
- Will be listed here before sale
Questions
Good to know
Why current sensing?
A relay can click without the fan running. Measuring current proves it ran, and catches failed equipment.
Try the Relay node early
Write to support@kinokora.com with “notify:hardware/relay” in the subject.
Works with