It all depends on how many devices from your vehicle you want to integrate into the REVOTION system. As a rule, one REVOTION module is required for each device to be integrated.

Only with the NODE Level and NODE Temp can two sensors be connected to one NODE.

Example calculation:

Switch 1x water pump

Switch 1x outdoor light

Switch 1x LED inside

Read out fresh and grey water tank

Read outside & inside temperature

2x NODE Switch for water pump & light

1x NODE Ambient for LED

1x NODE Level

1x NODE Temp

+ 1x Brain (always required)