Water Level Sensor Module

A Water Level Sensor Module is a simple and effective device used to detect and measure the level of water (or other liquids) in a tank or container. It's commonly used in DIY electronics, Arduino projects, home automation, and industrial applications.

Key Components:

1. PCB with Exposed Traces or Probes: Acts as the sensing part that detects the water level.
2. Comparator Chip (like LM393): Compares signal levels and sends digital/analog output.
3. Pins:

• VCC: Power supply (typically 3.3V to 5V)
• GND: Ground
• DO (Digital Output): High/low signal based on threshold
• AO (Analog Output): Varies with water level

Working Principle:

• The module works by detecting water conductivity.
• Water bridges the conductive traces, creating a voltage drop that's measured.
• Output signal changes as water level rises or falls.

Specifications (Typical):

• Voltage: 3.3V–5V
• Output Type: Digital and Analog
• Sensor Type: Capacitive or resistive (more common and cheaper)
• Waterproof: Most are not waterproof—must be handled with care

Projects:

• Water tank overflow alarms
• Automatic irrigation systems
• Aquarium water level monitoring
• Rainwater harvesting automation

Origin: China

Brand: Generic