Weight:28g Color: as picture show Size:75mmx48mm/2.95"x1.89"(inch) (approx) The rated voltage: DC12V Voltage range: DC7.0 V-13.6 V The input power: 0.24 A The rated speed: 9500 R.P.M Temperature range:-10.. 70 ° C Txpect life: 25 ° C L10 when expected life 50000 hours Bearing structure: free maintenance dual ball bearings Rotation direction: the wind from stents place eduction, facing the rotor counter-clockwise The wiring way: + red-black signal: blue (blue line, the alarm line speed, it is necessary to pay attention to). Line about 20 cm long The biggest air volume: 26.8 m? / h The electric motor protection : overload protection, wrong level protection and stall lock current protection Minimum wind pressure : 0.. 120 Pa Noise index : 41.9 dB (A) Material qualitative material: glass fiber reinforced plastic, PBT shell, PA blades Function explain : electronic reversing the rotor dc fans, complete electronic directional control components