APC UPS, 850VA UPS Battery Backup & Surge Protector, BX850M Backup Battery, AVR, Dataline Protection and LCD Display, Back-UPS Pro Uninterruptible Power SupplyAPC 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. Nominal Output Voltage - 120VAPC UPS, 600VA UPS Battery Backup & Surge Protector, BE600M1 Backup Battery Power Supply, USB Charger, Back-UPS Series Uninterruptible Power SupplyAPC 600VA UPS Battery Backup and Surge Protector with USB Charging Port, APC UPS Back UPS (BE600M1). Operating temperature: 0 - 40°C. Alarm when on battery, distinctive low battery alarm, overload continuous tone alarm. Nominal output voltage: 120 V.