About The P3500i Inverter. Pramac P3500i Inverter: This generator includes an electric and recoil starting system and is ideal for sensitive electronics. Equipped with an OHV engine which provides consistent power for multiple applications. Inverter technology means stable power for safe operation of sensitive electronics. Pramac P3000i Economy Mode automatically adjusts the engine speed to the optimum level – this provides excellent fuel economy and noise reduction. Oil bottle, funnel and plugs included in the carton box. Selector switch: O/I, Economy Mode, Air choke valve, power button and starting handle. Digital Display: Outputting energy (indicator light – Green), Overloading and Oil alarming (indicators light – Red), Voltmeter / Hourmeter. Protections: Overload; Oil Guard; Overvoltage; Overtemperature, Short circuit, Protection Control panel IP 44. 2 x UK Domestic socket [BS1363 (13A) IP54]. N°2 USB DC 5V 2A. Stage V, 3000 rpm, 4 stroke. 10L, Fuel gauge, Fuel filter.