10-Pack Rain Sensor Module with LM393 Comparator

Key features

• COMPLETE 10-PACK SET: Each package contains 10 complete sensor sets for multiple projects. The total inventory includes 10 large raindrop sensor boards, 10 small LM393 control module boards, and 10 two-pin jumper wire cables with FR-04 double-sided material and fixing bolt holes.
• DUAL OUTPUT DETECTION: Operating on 3.3V-5V working voltage, the module utilizes an LM393 wide voltage comparator with driving capability exceeding 15mA. It provides DO digital switch output (0 and 1) to directly drive relays or buzzers, alongside AO analog voltage output for precise microcontroller readings.
• ADJUSTABLE SENSITIVITY CALIBRATION: An onboard potentiometer allows you to fine-tune the water detection threshold, ensuring the system responds to actual droplets while ignoring ambient humidity to prevent false positives. The clean signal and stable waveform ensure accurate data transmission.
• STEP-BY-STEP OPERATION: Connect VCC to positive power supply and GND to negative pole. Link the DO or AO pins to your microprocessor inputs. Place the large detector board in the target environment. Apply power only during active read cycles to prevent rapid oxidation or electrolysis.
• VERSATILE AUTOMATION SCENARIOS: Designed for electronics enthusiasts and engineers building automated environmental systems. Ideal for configuring smart home garden irrigation controllers, open-roof vehicle rain alarms, and localized DIY weather stations with reliable moisture detection.

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