• can detect the humidity of the surrounding environment
• adjustable sensitivity (blue digital potentiometer adjustment)
• Operating voltage 3.3V-5V
• output in the form of
• analog voltage output, b. digital switching outputs (0 and 1)
• with fixed bolt hole for easy installation
• board PCB size: 3cm * 1.6cm
• power indicator (red) and digital switch output indicator (green)
• comparator with LM393 chip, which is stable

Module interface specification (4-wire)

• VCC external 3.3V-5V
• GND external GND
• DO small plate switch digital output interface (0 and 1)
• AO board analog output interface