The Hikvision DS‑UPS18D‑Z is a compact DC backup unit designed to keep your essential devices—like routers, modems, IP cameras, PoE injectors, and small network gear—powered during outages. Here's a concise overview: Output power: 18W with selectable voltages—5V / 9V / 12V DC, plus a PoE port (15V @ 0.8A or 24V @ 0.5A) Battery: Built-in lithium battery of 8,000mAh, recharges in 2–3 hours Protection & indicators: Over-charge/discharge, short-circuit, overload protection with LED status lights (green AC, red battery, yellow overload) Ideal for: Providing seamless, efficient DC-only backup—more energy-effective than AC UPS—for continuous internet connectivity and surveillance uptime during power interruptions.