Gdstime 979433mm DC 12V Dual Ball Bearing DC5.52.1 Connector Blower With AC110-240V Controller Features 100% Brand and . Easily installed,could used for cooling electrical products. Reducing equipment working environment temperature,prolong the service life of equipment. Concentrated wind, 90 vertical exhaust.It can be used for kitchen equipment, boiler, Outdoor barbecue stove, camping campfire combustion,medical equipment disinfection cabinet. Adjustable voltage power controller, DC 3V-12V 2A, just adjust the required voltage through the switch knob. Parameters: 9733 Blower Specifications: Dimensions: 97(L)x94(W)x33(H)mm Connector: DC 5.5x2.1 Rated Voltage: DC12V Rated Current: 0.510%Amp Bearing Type: Dual Ball Rated Speed: 360010%RPM Air flow: 2710%CFM Noise: 52.510%dBA Air Pressure: 1.0110%In HO Life: 50000 hours Cable Lenght: 30cm Weight: 185g/pcs 1232 Blower Specifications: Dimensions: 120(L)x120(W)x32(H)mm Connector: DC 5.5x2.1 Rated Voltage: DC12V Rated Current: 1.010%Amp Bearing Type: Dual Ball Rated Speed: 300010%RPM Air flow: 32.610%CFM Noise: 49.610%dBA Air Pressure: 1.1310%In HO Life: 50000 hours Cable Lenght: 25cm Weight: 248g/pcs 1440 Blower Specifications: Dimensions: 140(L)x140(W)x40(H)mm Connector: DC 5.5x2.1 Rated Voltage: DC12V Rated Current: 1.510%Amp Bearing Type: Dual Ball Rated Speed: 300010%RPM Air flow: 55.410%CFM Noise: 63.210%dBA Air Pressure: 0.7110%In HO Life: 50000 hours Cable Lenght: 25cm Weight: 362g/pcs Adapter Specifications: Item Name: Adjustable Power Adapter Color: Mainly black Efficiency: 95% Net weight:139g/pcs Input Voltage: AC 100-240V, 50/60Hz Output Voltage: DC 3-12V 200-2000mA DC Connector: 5.5*2.1mm The Pole of DC Plug: Center positive(+), outside negative(-) Plug Type: Standard US/EU/UK Cable Total Length: About 234cm/7.7ft Package Included We will send you according to your choice. Notices 1.Transition: 1cm=10mm=0.39inch. 2.Compared to other bearings, double ball bearing fans produce slightly more noise, but last longer. 3.Compared to axial fans, blowers produce slightly more noise when working. 4.The current on the label will be updated from time to time, but keeping the other parameters the same. 5.We can customize according to customers requirement, please