1. DC UPS inbuilt10400mah lithium batteries, which can provide long backup time. 2. High compatibility, suitable for most digital products in the market. 3. Power Over Ethernet(POE) can transmit the data and power at the same time to simplify wire set . 4. Intelligent circuit design with over-charging, over-discharging and short circuit protections. 5. Bulit-in adapter allows wide AC voltage range(100~240Vac).