Riello Uninterruptible Power Supplies (UPS). The Riello Sentinel Pro 3000VA online single-phase double-conversion UPS offering a high level of reliability and protection for critical servers and voice and data processing IT systems. For long runtime applications, Sentinel Pro (ER models) can be fitted with matching battery extension packs, which also includes additional battery boost chargers.
It has USB communication ports as a standard, with a built-in expansion slot for additional adapters, protocol converters and relates contact cards. This is designed to save energy and has a power OFF pushbutton feature to reduce energy consumption to zero when no load is connected or switched OFF.
Any part numbers with an ER suffix requires an external expansion pack to operate.