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POE UPS provides backup power for PoE devices (e.g., IP cameras, wireless APs, IoT terminals) via Ethernet cables, delivering data and power (15W–90W per port, IEEE 802.3af/at/bt compliant). It switches seamlessly to built-in Li-ion/lead-acid batteries during outages, offering minutes to hours of runtime. Ideal for surveillance, smart buildings, and industrial IoT, it simplifies wiring and ensures 24/7 operation in critical networks.