Mini DC UPS • IntelIigent circuit design with over-charging, over-discharging and over-Ioad and short circuit protection • Built-in high-capacity lithium batteries • LED or LCD status indicators • Voltage selector • 5V /2A U SB Output for charging smartphones quickly • Built-in adapter allows a wide AC voltage range of 100-240 Vac • Suitable for most digital devices • Power over Ethernet (POE) transmits data and power at the same time • Automatic switch- on when connected to AC power