: Stepping down variable PV array voltages to charge battery banks or power microcontrollers.
The "v1.0" simply indicates the PCB revision. If you have this board, you have a device designed to detect water, moisture, or rainfall. Hw-133-v1.0 Datasheet
: By optimizing device performance and power efficiency, Hw-133-v1.0 can contribute to more sustainable and environmentally friendly technologies. : Stepping down variable PV array voltages to
Since HW-133 is a PCB design, not a chip, search for these terms instead: not a chip