DD22012D0220ZZ-S-2 has wide input voltage and high degree of automation; The module is provided with short circuit protection and automatic recovery; Primary isolation, high isolation strength, stable and reliable; Overvoltage protection, protection of battery and system electrical equipment, terminal connection, convenient installation and use, simple maintenance, no need for manual intervention in its work after power transmission, high power output (9 times of rated power can be output when mains and battery are powered simultaneously, and 8 times of rated power can be output when single battery is powered), strong load carrying capacity, suitable for impact load or inductive load; Over temperature protection to avoid long-term overheating operation of the device and improve the service life of the device; External battery, flexible configuration; Automatic three-stage charging, regular activation of the battery, battery life greatly improved; End users can directly replace the DC screen to help customers reduce costs; Intelligent high-frequency power supply technology, self monitoring, self diagnosis, local display, alarm, and network communication can be realized to realize unattended automatic remote management; High efficiency, high power factor, low total harmonic distortion of input current; Digital current sharing technology is adopted, and the degree of non-uniformity of parallel operation is less than ± 5%; The charging module has the anti reverse function of the battery. When the battery is connected reversely, it will automatically alarm, and the module will not work; LCD is used to display the output voltage and current of the module, battery voltage, battery current (distinguish the current direction by ±), battery capacity, battery temperature, battery floating charge status, etc. It has the function of managing 0.1C online automatic full capacity capacity of storage battery.