An Arduino compatible rain sensor.
Features:
• Operating voltage: 5V
• Provide both digital and analog output
• Adjustable sensitivity
• Output LED indicator
• Compatible with Arduino
• TTL Compatible
• Bolt holes for easy installation
• Jumper wires included
From the schematic:
LM393 is used as a comparator
OUT - Digital Output (TTL Compatible)
AC - Analog Output
IN - Reference Voltage of the comparator
Size:
2.2" x 1.6" (the sensor)
1.6" x 0.6" x 0.25" (the module)