Su kam pure sine sine so good and wonderful my father bought for 2 year and connected my house 2 year and not problem created and presently it is good working.
And I am so happy to su kam pure sine wave I suggestion all people you are used and result will watching it is just 2 year later service given that and I am services my invator and beter work su kam very lowest maintance accepted and only for use in invator ditilled water and clean always batries and it most important it is overlord time alert and main electicity lovely and it work on tubelight on7-8 hour and fan 5 hour good backup battery life su kam invator cool. su cam battry in water cheakr are free on battry just watched at a water level decreases and that time water requried And filled into battery water cool that and all are clean battery electrode because it is conusmed power calcium on electode