Regarding Flowfriend 0-10V Drive:
- White = grounding
- Brown = 0-10 V DC
- 0-1.5 V: the pump supports the speed of the display (i.e. set manually (must be between 600 and 2550 rpm)
- 1.5-2.3 V: the pump stops
- 2.3-10 V: the speed increases linearly from 600 up to 2550 rpm
The voltage is not allowed to exceed 12V, then the device is damaged.