Features: 1.POWERFUL: Blower fan is small but powerful, it can produce a powerful 110CFM airflow at 6000RPM ( maximum ) 45dBA ( maximum ) for applications with restricted airflow, ideal for cooling electronic equipment and components in tight spaces. 2.BRUSHLESS MOTOR: Mini blower fan includes DC brushless motor with P.B.T. housing and dual ball bearings, rated at 50,000 hours, allowing the fan to be placed flat or upright. 3.ADJUSTABLE SPEED: Small blower fan has a speed controller with a power switch to set the fan speed to the optimal noise and airflow level for various applications and noise environments. 4.PLUG AND PLAY: Blower fan is easy to install, after installing the screw set simply plug it into a wall outlet to start the blower. Power adapter increases the maximum fan speed and enables the fan to be powered through an AC power outlet. 5.VOLTAGE RANGE: 3.5V starting voltage; working voltage range 7 to 13.5V, the blower fan can work when it exceeds 13.5V, but it will affect the life of the fan. specification:Item Type: Mini Blower Fan Material: ABS Plug s: US Plug 100?240V Current: 2.85A Power: 34.2W Rotational Speed: 6000RPM Wind Speed: 7.5m/s Air Volume: 110cfm Noise: 45db Bearing Type: Double Ball Service Life: 100000 Hours (25 , 45?85% Relative Humidity Environment) Size: Approx. 97 x 97 x 33mm/3.8 x 3.8 x 1.3in(Length:97mm, Diameter:94mm, Screw hole spacing:100mm, Outlet thickness:33mm) Input: AC 100-240V, 50.60Hz Output: DC 3-12V 2A PackageList: 1 x Blower Fan 1 x Power Adapter 1 x Ventilation Port Tube NoteAll data are measured manually, and there are certain errors in the measurement results.