... .* Accessory: battery cables, exhaust silencer, flexible pipe* Optional: Weather proof canopy, silent canopy, Trailer,ATS, SYNC panel, Battery chargerDetails: ... 1)Cooling wayWater-CooledFuel tank8hrs operation base tankTypeOpen/Soundproof/Weather proof canopy is optionalFrequency< 3%Frequency at stable state< ... first Welcome your inquiry,Thank you :-) Deutz silent type diesel generator set