CyberPower’s CP900AVR has an easy-to-use interface with just two buttons (electrical power on/off and mute) and four indicator lights (exhibiting when the device is turned on, once the battery backup kicks in, when AVR is activated, and when there’s an influence overload) on the front from the unit. Picture: Michael https://connerfatme.popup-blog.com/35268133/getting-my-battery-ups-backup-to-work