Rain Drop Sensor Module

Specification: The Rain Drop Sensor Module is an electronic sensing device designed to detect moisture or rainfall by measuring changes in electrical conductivity across its exposed nickel-plated surface. In laboratory settings, it is primarily used for automated environmental monitoring systems, meteorological data logging, and as a trigger for automated shut-off mechanisms in outdoor research equipment.

Technical Specifications:
* Operating Voltage: 3.3V – 5V DC
* Output Format: Digital (0/1) and Analog (AO) voltage signals
* Sensitivity: Adjustable via onboard potentiometer
* Surface Material: Nickel-plated conductive tracks
* Interface: 4-pin header (VCC, GND, DO, AO)
* Comparator IC: LM393
* Dimensions: 40mm x 50mm (sensor board), 32mm x 14mm (control board)