Box type construction, vivid use, 2 × 12Vlead-acid storage batteries as spare electricity.

Continuous multi-channel direct currentoutput is stable.

Conversion between main electricity andspare electricity is in time.

Independent self-control off-line typeintegrated recharge mode and the defensive function of charging and maintainingfor storage battery, cut off and protect function when over discharging andvery low maintenance electric current.

The protection of output overloading andshort-circuit, recovering automatically after removing failure.

Signal output functions for the mainelectricity and spare electricity and failures, provide real time logic datafor control center.