Power cuts and voltage spikes are hard on routers, NVRs, servers and PCs. A UPS (uninterruptible power supply) gives you time to save work and shut down safely, and a line-interactive or online UPS also smooths out voltage swings.
Size it by adding up the wattage of what you’ll connect, then leave some headroom. Remember that UPS batteries wear out — most need replacing every few years.
Which equipment do you keep on a UPS at home or work?
