The chipset used is LM393, and water sensor board.
The sense board has a size of 40mm X 54 mm. The LM393 board has a size of 32mm (L) X 14 mm (W).
Working voltage: DC 3.3-5 V.
Features:
- Signal output indicator
- Single channel signal output
- Active low
- Adjustable sensitivity
- The board can output ON/OFF signal directly, and cannot output the analog signal proportional to the humidity.
VCC--Positive (3.3-5v)
GND--Negative
DO--TTL on/off signal output
AO--Analogue Outputs
