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This water level sensor module uses conductive liquid-level detection, a set of exposed parallel traces on the board's surface that respond as water rises and progressively bridges more of them, changing the sensor's output accordingly. Because more of the board's conductive area gets covered as the water rises higher, the module's analog output changes gradually with liquid depth rather than giving a single on/off signal, allowing for more precise monitoring than a simple float switch.
It's described as a high-performance liquid detection sensor designed for Arduino, ESP32, ESP8266, Raspberry Pi and other microcontroller platforms, reflecting genuinely broad compatibility across most common hobbyist boards.
The module uses a simple 3-pin header interface: S for signal, + for power, and - for ground, and operating voltage spans 3.3V to 5V DC, matching both major logic voltage families directly. Response time is fast, described as real-time detection, and current consumption is low, both useful traits for a sensor that might run continuously in a monitoring setup.
Construction uses high-quality FR4 PCB material, the same durable substrate used in standard circuit boards, giving it reasonable resilience for repeated exposure to the liquid it's monitoring, though as with any exposed-trace sensor, it should be kept clean of mineral buildup or corrosion over long-term use in certain water types.
Anyone building a water tank level monitor, a simple flood detector, or an educational project demonstrating liquid level sensing will find this module's analog output and broad board compatibility a straightforward starting point.
Through conductive traces on the board that get progressively covered as water rises.
An analog signal that varies with liquid depth.
3.3V to 5V DC.
Arduino, ESP32, ESP8266, Raspberry Pi, AVR, PIC and STM32.
Through a simple 3-pin interface: VCC, GND and signal.
| Brand | Generic |
|---|---|
| Sensor Type | Conductive Strip Liquid Level |
| Selling unit | PCS |
