Hardware Requirements
You will need:
- 
One E-BOARD 
- 
One or more E-RELAY 
- 
One 12 Volt DIN rail power supply. 
The following is our recommendation to power an E-BOARD with one or more E-RELAY devices.
| Number of E-RELAY | Power Supply rating | Model | 
|---|---|---|
| from 1 to 4 | 15W | MeanWell HDR-15–12, 12V, 1.25A | 
| from 4 to 8 | 30W | MeanWell HDR-30–12, 12V, 2A | 
Warning
Make sure to use a power supply with appropriate voltage and power rating.