https://www.oneinverter.com/low-frequency-inverter/the-best-power-inverter.html
HI Series Pure sine wave solar inverter from 350w-1.2kw with Competitive prices
1. off grid low frequency pure sine wave UPS inverter
2. range from 350w to 1200w
3. transfer efficiency >87%
4. switch time <8ms, inbuilt 15A AC charger /AVR Stabzlier / intelligent cooling system
5. latest toroidal transformer
6. triple surge power
7. Intelligent-bits DSP chipset
8. Perfect use for off grid home solar system