APC Battery Backup Surge Protector, BX850M Backup Battery Power Supply, AVR, Dataline ProtectionAPC 850VA UPS Back-UPS Pro mini-tower backup power supply provides quality power protection for your critical home and small business devices. An APC UPS provides backup power power and surge protection to power and protect your PC or Mac, network router, gaming consoles like Xbox and PS4, AV and other business electronics from the dangers of power surges, spikes, lightning and power outages. By powering your critical electronics with a backup battery during blackouts, you ensure personal and professional connectivity when it matters most. Improvements in efficiency, size and surge protection come at an affordable price, making the Back-UPS Pro mini-tower battery backup UPS models a perfect solution for your power protection needs.Schneider Electric APC UPS 425VA UPS Battery Backup & Surge Protector, APC UPS BackUPS (BE425M)The new APC backups optimize home and small business uninterruptible power supplies (ups) by focusing on the most critical aspects of power protection. Leave the back-ups connected to ac power for eight hours while the battery charges to full capacity.The new APC Backups optimize home and small business uninterruptible power supplies (UPS) by focusing on the most critical aspects of power protection. Output Frequency (sync to mains) 50/60Hz +/- 3 Hz