Resistive Rain Sensor

This resistive rain sensor module is designed for accurate rain detection and rainfall intensity measurement. It consists of a sensing board (rain board) and a control module with a comparator chip (LM393). The sensor works on the principle that water reduces the resistance between the conductive tracks on the board, which the module converts into readable signals. It provides both digital switch output (for threshold-based detection) and analog voltage output (for measuring intensity). The module operates at 5V DC, making it ideal for integration with Arduino, ESP32, and other microcontroller platforms. Key features include high sensitivity, easy installation, and LED indicators for power and output status. Common applications include automatic wiper systems, weather monitoring stations, smart irrigation controllers, and home automation projects like closing windows during rain. Choose this sensor for its reliability, low power consumption (<5mA standby), and straightforward interfacing with popular development boards.