DC fan, YHWF12025 has a close linear relationship between voltage and adjustable speed.Its widely used in computer and home electric appliances due to its accurate speedadjustment,high power,low noise and low vibration. YHWF-12025,the electric parameter as follows: Model Rated Voltage Power Rated Current Rated Speed Air Speed Static Pressure Noise (V) (W) (A) (RPM) (CFM) (mmH2O) (dbA) YHWF-12025 12/12/18 2.4/3.6/2.8 200 2000 77.3 2.8 40 YHWF-12025 300 2500 98.1 4.1 43 YHWF-12025 160 2000 77.3 2.8 40 We can satisfy the customers different requirements about electrical parameters such as the noise,airflow,speed,and rated current etc. We can supply with high quality and favorable price!!