Top Motor 40x40x28mm 12 Volt -DF124028BL-PWMG

Top Motor 40x40x28mm 12 Volt -DF124028BL-PWMG 840556101611 PRODUCT SPECIFICATION: DC Fan Size:  40x40x28mmBearing Type: Dual Ball BearingFan Speed:  1100 to 9000 RPM ±10% Low Speed Noise Level: 45 DBARated Voltage:  12V, 0.50A Airflow: 16.32 CFMConnector: 4 Pin with 8" tail MANUFACTURE DATA: Frame: PBT+30%GF UL94V-0 (Black) Impeller: PBT+15%GF UL94V-0 (Black) Weight: 37±5 grams Operating Temperature:10 °C ~ + 65 °C (65 %RH) Storage Temperature: 30 °C ~ + 70 °C (65 %RH) Vibration Test Displacement Amplitude: 0.75mm(Equivalent 10G) Frequency Range:10Hz55Hz/30SEC. Linear Scanning: 120 Cycle Endurance Timer Per Axis: 30Min. Orientation: X,Y,Z. NOTE:  PWM Fans are not variable speed control fans on their own.  An integrated circuit varies the speed and airflow of a fan using a pulse-width-modulated (PWM) voltage in response to temperature or system commands send typically by a computer motherboard. You can use them to run at full speed from an external supply if you adapt the plug. (PWM Adapter Cables) RoHS Compliant