The VST1100 UPS is a high-quality UPS that delivers a sinusoidal output signal. It has 2 powerful batteries of 12V/9Ah each, which ensure good performance during power failures. Of course, these 2 batteries are from an industrial top brand. The VST1100 has many possibilities. As standard, this UPS gives a signal to the outside world as soon as it starts working from its batteries, so when the mains voltage fails. It also gives a signal as standard when the batteries are almost empty.