Royal Exclusiv Bubble King® Double Cone 200 + RD3 Speedy with 1-10v connectivity :-

for aquariums up to 1000 liter

hard facts Bubble King^®Double Cone 200: ( 511RD3 /2E )
adjustable Red Dragon^® 3  Mini Speedy skimmer pump 50 Watt   1.500 l/h
Motor speed adjustable: 400-4000 1/min
Base plate: 25 cm x 32 cm / height ~ 55 cm

Technical data Bubble King^® Double Cone 200:
Skimmer pump: adjustable Red Dragon^® 3  Mini Speedy pump 50 Watt   1.500 l/h
Delivery rate adjustable: max.1.500 l/h  Air inlet and max. ~ 3.000 l/h Water inlet
wattage - active power: P = min. 15Watt/h  -  max. 50 Watt/h  
operating voltage: 230 Volt 50 Hz  (also in 110V/60Hz available)
Protection class: IP 68 
Water level: ~ 130 mm up to ~ 250 mm 
Weight skimmer: 7 kg inclusiv pump 

Dimension skimmer without pump: 
250 mm wide / 320 mm length / ~ 550 mm height
Dimension skimmer with pump: 
320 mm wide / 400 mm length / ~ 550 mm height 

  Data_sheet_and_spare_parts.pdf     Operating_and_maintenance_manual.pdf
  RD3_Data_sheet_and_spare_parts.pdf 
  RD3_Operating_and_maintenance_manual.pdf

The connection of a controller/computer is prepared for 1-10 v connectivity!

Prepared for connection to an aquarium computer (E.g. GHL) via a 0-10V interface.
The additional controller, for the connection to the computer, costs $324.50 (incl. all connection cables and main adaptor)

Tested so far folowing these computers:
GHL ProfiLux 3.1 and from Neptune Systems the Apex Aqua Controller.

Compatible with following brands:

https://www.aquariumcomputer.com/
http://www.neptunesystems.com/
https://www.reefai.com/

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Functioning of the electronics:
Once a voltage > 0,5V to the 10V interface is, the interface adapter takes over controlling and the system and lock(disable) the buttons on the controller. Voltage will be < 0,5V normal controller operation and the buttons are again released. So can the interface adapter stay connected without performing a function.

If the Aquarium(tank)-computer voltage under 0,5V the 0-10V interface is shut down and the pump can be operated manually. From 0,5V, the interface will take over control of the scheme. In the area of 0,5V-0,8V the pump is switched off. 1V starts the pump at the lowest level (15W) and run. At an increase of 0,5V will increase the level, also. So 1V = 15W  2,5V = 25W….. 5,0V = 50W.

At a higher input voltage remains the Speedycontroller to the maximum setting are available and no longer increases. The interface adapter behaves as if the corresponding would push the button.