Advantages of EC fans:No humming noise No motor noise Power consumption is up to 70% smaller Less heat generation Up to 5x larger pressure build-up (Pa) From 10% - 100% Power infinitely variable Maintenance-free motorsTechnical data:Connection: 315mm Vmax: 2960 m³/h Power connection 230V / 2A Power consumption 282 Watt Volume Max. 85 dB(A) Max speed: 2800 1/min Max pressure: 600 Pa Max. switching temperature: 45°C Control type Motor: 0 to 10V Motor protection: TEC Insulation class Motor: F Motor type: EC IP Protection class Motor: IP54