It is a Adapter/regulator/Power Supply module. Input voltage: DC 5.5~30V. Output voltage: DC 0.5~30V. Output current: 4A for long-term working. Output power: 35W. Application: as a normal buck boost converter module with over-current protection; as a battery charger; as a high-power LED constant current driver module, etc.
1 x Buck Boost Board ( Power Supply module/regulator/Adapter/Power Converter )