The APC Back-UPS Pro BR1500MS2 is a 1500 VA / 900 W line-interactive UPS — the standard form factor for a desk-side battery backup that keeps a desktop PC + monitor + modem + router running through a brief grid outage, and protects everything plugged into it from voltage sags, spikes, and surge events.
Pure sine wave output matters for modern devices with active power factor correction (APFC) — most current PSUs, network gear, and any device with a switching power supply. A stepped or simulated sine wave UPS can shut down or damage APFC equipment; this one outputs clean enough power that it’s invisible to the connected devices.
Automatic voltage regulation (AVR) instantly corrects high/low voltage events without switching to battery — saves battery cycles on the noisy or brownout-prone mains lines that show up in older homes and rural feeds.
It carries TÜV C-US safety listing, the Canadian-recognized NRTL mark for UPS safety under the harmonized US + Canada UPS standard (UL 1778 / CSA C22.2 No. 107.3). Same regulatory standing as cULus or CSA for code, insurance, and inspection purposes.
