The AIMS 4000-Watt 120-Volt/240-Volt pure sine wave inverter charger with built-in transfer switch and battery charger is your solution for backup or off grid power solutions. This inverter is split-phase and will output 120 or 220-Volt/230-Volt/240-Volt AC， AND has a 120-Volt AC input for charging. This inverter also outputs 50 Hz or 60 Hz via the SW4 dipswitch on the DC side of the product. This means that this inverter works internationally and is operable with nearly any electrical system on the planet. The 4000-Watt inverter is also built to withstand reasonable heat and temperature fluctuations because of its over-temperature protection and dual thermally-controlled fans and its protected from humidity or airborne dust and dirt by virtue of its marine-coated (or conformal-coated) boards. This inverter provides reliable power needed in any RV， boat， camping， business or residential emergency backup power application. When you purchase a low frequency inverter charger from AIMS POWER， you're getting our top-of-the-line product offering.

4，000-Watt continuous power

12，000-Watt surge power

12-Volt DC input

120-Volt/240-Volt AC output

Pure sine wave

Nominal efficiency: 88% plus

Line mode efficiency: 95% plus

Output frequency: 50 Hz plus/minus 0.3Hz 60 Hz plus/minus 0.3Hz

Typical transfer time: 10 milliseconds (maximum)

THD: less than 10% DC

Over charge protection shutdown: 15.7-Volt

Selectable charge setting based on battery type

Adjustable charge current off - 20% to 100%

40 Amp automatic transfer switch 10 milliseconds (maximum)