CyberPower’s CP900AVR has an easy-to-use interface with just two buttons (electricity on/off and mute) and 4 indicator lights (exhibiting in the event the unit is turned on, once the battery backup kicks in, when AVR is activated, and when there’s a power overload) within the entrance on the unit. Picture: https://tysonjnmli.imblogs.net/85932417/the-greatest-guide-to-ups-battery-price-in-sri-lanka