The DC UPS TDC-1100 is a compact, uninterruptible power supply (UPS) designed for small digital devices. It features a lithium-ion battery, 8800mAh capacity, and provides output at 9/12VDC and 15/24V PoE, along with a 5VDC USB charger. It's designed to handle a wide range of AC input voltages (85-265V AC) and includes protection against overcharge, overcurrent, and short circuits.