Feature: 1. MAIN FUNCTION: When powering off for protection, switch to battery mode to ensure continuous operation of digital devices until safe shutdown. 2. WIDE VOLTAGE INPUT: With a wide voltage input range, when the mains power is overvoltage, too low, or abnormal frequency, the battery working mode starts. 3. CIRCUIT PROTECTION: Built in short circuit, overvoltage, and undervoltage protection, high accuracy output sine wave AC power, ensuring stable equipment operation. 4. WIDE APPLICATIONS: Widely used in switch, router, display, firewall, wireless application, server, intelligent security, computer, laboratory equipment, printer, electric drill, etc. 5. ALLOY STEEL SHELL: The power supply housing is made of excellent alloy steel, with high hardness, impact resistance, scratch resistance, and long service life. Specification: Item Type: Uninterruptible Power Supply Material: Alloy Steel Battery: 4 x 12V Battery, Capacity: 4 x 7AH (built in battery) Output Voltage: 110V 220V 1φ+N+PE Battery Voltage: 48VDC Capacity: 2000VA Overload: 100-110%: Only Warning 110-130%: 30s Automatic Shutdown Greater Than 130%: Shut Down Immediately Current Peak Ratio: 3: 1 Output Waveform: Pure Sine Wave Charging Time: 4 hours to 90% capacity (internal battery) Size: Approx. 192 x 440 x 340mm / 7.6 x 17.3 x 13.4in. Package List: 1 x Uninterruptible Power Supply1 x User Manual