Everflow 70x70x15mm PWM Dual Ball Bearing 12 Volt Fan-R127015BU

Everflow 70x70x15mm PWM Dual Ball Bearing 12 Volt Fan-R127015BUU 840556002208 FEATURES:Operating Temp: -10-70C Material： Housing Plastic (UL：94V-0)Bearing Type: Two ball bearing Impeller Plastlc (UL：94V-0)Power : 0.36~ 4.2 WStatic pressure : 0.38~3.92 mmH2OLead wire: UL1061 #26AWG or equivalent Pin Assignment : Pin 1 Black (GND), Pin 2 Yellow (PWR), Pin 3 Green (SGN), Pin 4 Blue (PWM)Life Expectancy: 50,000 hours PRODUCT SPECIFICATION: DC Fan Size: 70x70x15mmBearing Type: Dual Ball BearingFan Speed: 1500~ 4800 RPMNoise Level: 19.2~38.9 DBARated Voltage: 12 VoltMax Airflow: 12.28~39.29 CFMConnector: 4 Pin *Sound level measured at the distance of one meter from the axis of intake.*Specifications are subject change without notice 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