Hydraulic control units are designed and manufactured to operate monitors from distance using hydraulic principles. Controlling units as a minimum consist in a hydraulic oil-containing tank reservoir, a hydraulic pump to pressurize the oil, and bidirectional distribution valves. Hydraulic pumps are driven by electrical actuator, diesel engine or Pelton water turbine. An emergency hand pump is always provided as an emergency backup measure. 

A single hydraulic unit can feed multiple monitors according to project requirements. Each hydraulic actuator is connected to control the unit by two hydraulic pipes. Connection ports are equipped with regulators to adjust pressure and flow rate.

Bidirectional distribution valves can be bypassed with electrically controlled valves to provide remote operation to the system.  

ATEX versions are produced according to 2014/34/EU with CE marking available on request.