Specification Brand Name Luminous Model Number Optimus 2800 Type of Product Inverter Series Optimus Capacity 2500 VA Warranty* 24 month warranty Optimus series is a micro-controller based, advanced pure sine wave inverter series, equipped with mains by pass switch and battery charging current setting. Its informative LCD display shows eight real time performance statistics, including charging time, back-up time at current load, running load status, fault indications and much more. It offers flexibility to choose between higher backup time and better performance by controlling output voltage. Optimus inverter series is a great choice for your household, commercial and office needs.