Description Dual 120mm fans designed for Cooling Cabinet, Chassis, Server and Workstation. 110V-220V fan power supply with speed control function, turn the knob to adjust the speed, 3V-12V adjustable fan speed，and can turn off the fan. Powered by wall outlet, the speed controller designed to set the fans' speed to optimal noise and airflow levels. Specification Size:120x120x25mm / 4.72x4.72x0.98 in. Input: 100V - 240V 50/60Hz Output: DC 3-12V 2A Current: 0.45 Amp Power: at slowest speed, less than 2W; 7w at full speed Connecter: DC 5.5X2.1mm Female Total Airflow: 92.3 CFM ±10% (at full speed) *2 Total Noise: 37.2 dBA ±10% (at full speed) *2 Fan Speed: 2500 RPM ±10% (max.) *2 Life: 50000 hours Application Designed for cooling cabinet, shassis, server, workstation, Computer case, studios, car Window exhaut, plant tent, crawl space, basement, laundry room, garage, attic, RV refrigerator, X-box, ps4, amplifier, kitchen, humidifier, mushroom growing, etc. Package included: 2* 120*120*25mm Cooling Fans 2* 120mm Fan Grill 1* Variable Speed Controller 1* DC Power Adapter 1 Male To 2 Female 8* Mounting Screws & Nuts