2.5W Solar Roof Ventilator Vent Fan Waterproof Exhaust Intake +battery 120mm For Caravan Boat Green House RV Motorhome ,Easy to Use

Anti-UV ABS + stainless steel cover+waterproof strong and durable housing make it possible to be used on Marine , Boat , Rooftop tent , Caravan , Motorhome , Truc and so on. Dual Functions: Intake &ExhaustAir This ventilator can work as extractor and intake air fan by only one motor and 1 set fan blades. Lithium battery for night operation the battery will charge itself as long as there is sunshine. after fully charged, it can operate vent for 12 hours without sunshine