This device with built-in 2pcs 12V/12AH battery.Ensure the DC power supply is working normal and continuously when the AC supply is power failure.
The standby time is determined by the battery capacity and the load-magnitude.When the battery discharge to the under-voltage, the device give alarm signal and stop the DC output automatic to protect the battery.
When the AC power supply is regular working, the device automatically power recover and the battery fully charged again.To extend the backup time can connect an external battery, the battery voltage is 24V (12V * 2), a capacity of 12AH-100AH
Input voltage ：AC220V/2.5A(190V-255V)/
Continuous operating power
Short operating power(closing operating)/Operating time
Note:In order to ensure the safety of system, AC and DC part adopts isolated way to work,no AC power, the power is the same.Will shut down after protection, afresh again resumed electricity output.