What's the different between high frequency and low frequency?
High frequency power inverter have limit for running appliances with motors, engines, special light and TV
Low frequency power inverter available for sensitive load, accept generator’s energy output, high power factor, and follow our warning label, it would not have any problems.

New Version：
1. Made by Aluminum housing, from & back panel made by 2.5cm iron, strong enough to hold this big guy.
2. TURBO POWER AUTO DETECTION:
when you use some motor, engine, pump, some need 10 times surge power require, in this moment, the IC will auto offer more amp come from the battery with 2 times standby power to turn on the heavy appliance, after turn it on, the amp will come to normal voltage & amp.
3. inside big transformer is made by Taiwan factory, material come from Japan, that's bring the inverter efficiency come maintain to 92% at least.
4. Inside mosfet from Germany, not made in China, that's making sure the inverter for long time use, will be no problem, temperature can stay around 60℃.
5. UPS function:
a. usual UPS function is build-in battery, only can run about 5 mins.
b. however, this inverter can decide how long you want to use, the more high capacity battery you connect, then you can use whatever you want
c. Just connect the AC power cord to your home AC source, when out of AC power, the inverter will auto switch to inverter function, this can be your back power.