Description:

Manufactured By Atomic Market 
Operating voltage 3.3V-5V 
Sensitivity can be adjusted via potentiometer 
The sensor uses the FR-04 high-quality double-sided materialsKing Size 5.0 * 4.0CMand with the surface of the nickel plating treatmentagainst oxidativeconductivitysuperior performance and longevity; 
Small board PCB size: 3.2cm x 1.4cm 
Wide voltage LM393 comparator 

How to use: 
Connected to 5V power supplythe power indicator lightsensor board is not water dropletsDO output is highthe switch lights offdropping on a drop of waterDO output is lowthe indicator light switchBrush off the the above water dropletshas returned to output high state. . . . AO analog output can be connected to the microcontroller AD port to detect the size of the drops in the above rainfall. DO TTL digital outputs can also be connected to the microcontroller detects whether there is rain. 

Connection mode:                 

• VCC: positive power supply (3-5V)         
• GND: negative one.         
• DO: TTL switching signal output     
• AO: Analog signal output