Prolink 850VA/600W UPS Power Backup with AVR for Computer/Modem/Router/Switch/NAS/CCTV PRO851SFCU

The shutdown function can be done manually or automatically via ViewPower monitoring software, which is available for UPS + USB port connections. (Yes, Free ViewPower software.) In general, if the NAS software can detect the UPS, it is likely to be supported. Note that the line interactive UPS is simulated sine wave; if you are looking for pure sine wave, search for Prolink online UPS. AC Mode - Green Lighting Battery Mode - Yellow Flashing every 10 seconds Overload - Red Flashing every second Fault - Red Lighting Battery Mode - Sounding every 10 seconds Low Battery - Sounding every second Overload - Sounding every 0.5 second Battery Replacement Alarm - Sounding every 2 seconds Fault - Continuously sounding - Power backup your computer, modem, wireless router to avoid Wi-Fi dropping or Internet lost during power outage - TRUE AVR (Automatic Voltage Regulation) - Wide Input Voltage Range - Load Auto Sensing and Abnormal Protection - Super-fast Charging technology recharges battery to 90% within 2-4 hours - Surge Protection to protect connected equipment against disruptive power surges - Intelligent Battery Management