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Solar Exhaust Fan/solar attic fan/solar ventilator Feature and Advantage: 1.Make full use of free solar engergy without storage battery; 2.Hybrid power supply of solar energy and A/C power. When solar energy is not enough ,the insufficient energy will be replenished by A/C power automatically to ensure machine's steady operation at anytime. On Sunny day, when the irradiance E>=1063 w/m3,approximately 100% solar energy can be supplied while the A/C power consumption will =<6 w/h. 3.Light weight,miniture size and ultra quiet. 4.Aging resistance and durable .The damping capacity of the solar panel will maintain to be =< 10% after 10 years suage. 5.The main motor employ well-recognized ,advantaged and efficiency brushless DC motor. Specification:Supply Voltage Solar Energy:36V DC 3A 108WElectrical Eneergy220V 50 60HZWhen Solar Energy≥1063W/m2 RPM=600rpm; Air flow 3500 m3/HOperation Surroundings humidity≤90%Operation Surroundings temperature≤60°CSize (LxWxH)630x630x420mmNoise57db(A)Fan diameter490 mmNet Weight14 KG