: Consumes roughly 75% less idle current than LM2596 modules.
Ignore the Digital pin. Connect the Analog Out (AO) to your microcontroller. By reading the varying voltage, you can measure how hard it is raining or how wet the soil is, rather than just getting a "wet/dry" flag. Hw-133-v1.0 Datasheet
Have you used the HW-133 in a unique project? Let us know in the comments below! : Consumes roughly 75% less idle current than LM2596 modules
: Always measure the output with a multimeter before connecting your load to ensure the potentiometer is set to the correct voltage. Hw-133-v1.0 Datasheet