MULTI PROTECTION: Including battery protection, AC overload, over temperature, and short circuit protection. The sockets are designed to easily insert three large size plugs at the same time. just the same as home power/city power. Power your sensitive devices without any damage or annoying electrical noise. RELIABLE AND CLEAN: Reliable, safe and clean AC/DC power. It has reverse polarity, Overload and Thermal protection. 66Apm DC Power Output with built-in 3 stage smart charger. Easy replacement part for all power centers. Exclusive 3-year warranty from Inverters R Us and Powermax. CONSTANT AND STABLE- Power supply mode provides stable power to maintain system voltage for use in a wide variety of applications. Provides a constant clean power supply for using scan tools and reprogramming of ECMs without discharging battery. BUILT-IN HANDLE: makes it easy to transport and the integrated OFF/RUN/CHOKE knob simplifies startup procedures. Economy mode provides excellent fuel economy