Galvanised rectangular pressure control damper supplied with an electronic actuator and plastic static pressure measuring probe. Actuators available in multiple control modes, for example analogue control 0(2)-10V, Modbus & BACnet. The damper is used for requlating constant or variable static pressure in supply or extraction ducts. The aluminium counter rotating damper blades are equipped with an airtight gaskets and maintenance free bearings. The casing airtightness meets class C according EN1751, damper blade air leakage meets class 2 according EN1751. Available without (PSS) and with (PSD) insulation. External sound attenuators available as an option.