View source for Manual control of pumps and skimmer

The electrical infrastructure of the aquarium itself includes sockets for various electrical consumers:
* Skimmer
* Main pump 1
* Main pump 2
* Auxiliary pump 1
* Auxiliary pump 2
* Heater
* Lights

[[File:ManualSwitches.png|thumb|Manual switches for protein skimmer, pumps, heater and lights]]

Aquarium control allows manual override to switch off the skimmer, main pumps and auxiliary pumps.

The control cabinet includes a set of relays.
The sockets for skimmer and pumps of the aquarium itself are not powering the devices directly.
Instead, the sockets are connected to the relays inside the control cabinet.
The relays inside the cabinet control a set of power sockets inside the cabinet.
Skimmer and pumps are powered from these internal sockets.

With this configuration, the user has the option two switch off the skimmer and pumps even if the control system is providing power for these devices.

[[File:ManualSwitchRelays.png|thumb|Relays for manual control of protein skimmer and pumps]]