Approx! appUPS900V3

Uninterruptible Power Supply
This Uninterruptible Power Supply (UPS) provides clean and safe power to your computer and peripherals, and protects them from power outages, voltage drops, voltage surges and interference.
Normally, the UPS operates on the mains supplying power to the devices connected to it from the power supply. The battery charger uses the mains to maintain the battery at an optimum level. When there is a power outage, the UPS transfers the load to the battery. Devices connected to the UPS continue to operate normally until the UPS is turned off or its battery is exhausted.
When the mains supply is restored, the connected devices are automatically fed back from the mains without having to press the power button again thanks to the new Auto restart function.