https://www.oneinverter.com/inverter/hybrid-inverter/lcd-ups-inverter.html
FT series Solar power inverter
1. Off grid low frequency Pure sine wave solar inverter
2. Range from 1kw -7kw
3. Transfer efficiency ＞90%
4. Switch time <4ms
5. 35A AC charger / AVR stablizer / intelligent cooling system
6. Using latest toroidal transformer
7. Triple surge power
8. Intelligent DSP control chipset.