The Ultra Power SL-1.5K / EL-1.5K is a tower-style uninterruptible power supply designed to keep your equipment running during outages with a capacity of 1500VA and 1050W. It provides a pure sine wave output, which is essential for sensitive electronics that require a stable and clean power signal. The system handles input voltages from 145 to 275Vac and switches to battery power in as little as 2 to 6 milliseconds, ensuring your devices don't reboot when the main power fails. Inside the black chassis, the unit uses two 12V 9Ah sealed maintenance-free lead-acid batteries operating at 24V, which can recover 90% of their capacity within 6 to 8 hours of charging. For monitoring and connectivity, you have an LCD display, a USB port, and RJ11/RJ45 ports to protect your data lines from surges. The device weighs 25.6 kg and measures 405 by 145 by 220 mm, featuring two Schuko output connectors for easy plugging of standard appliances. Safety is integrated through automatic shutdown mechanisms for overloads and short circuits, as well as low voltage protection for the batteries. It is a reliable choice for users who need a steady power backup for workstations or home servers, as it automatically restarts once AC power is restored.