ITEM NAME:DC-DC 8-32V to 45~390V High Voltage Boost Converter ZVS Step-up Booster Mod O7M5 Description&Preview.1 x Booster Module. Output Power: 40W (Peak 70W). Over current protection: Yes. Input reverse polarity protection: Yes (non-self-healing, reverse burning fuse, try not reversed.). Short circuit protection: Yes.