APC Smart-UPS 500VA Lithium Ion UPS with SmartConnect, SCL500RM1UCNC, Line Interactive, Sine Wave, Short-Depth 120V Uninterruptible Power Supply with Network Card
APC Battery Back Up Surge Protector, 500VA Backup Battery Power Supply, BK500BLK Back-UPS
APC BACK-UPS CS BK500BLK 500VA/300W UPS System : Amazon.in: Electronics