Peaceful Pleasures Health and Wellness
Non-Contact Capacitive Water Level Sensor 3.3V–5V | Liquid Detector
Non-Contact Capacitive Water Level Sensor 3.3V–5V | Liquid Detector
Couldn't load pickup availability
Capacitive Non-Contact Liquid Level Sensor – Smart Water Detection
Keep your appliances running smoothly with the HELTC Capacitive Non-Contact Water Level Sensor. This clever little sensor detects liquid levels through plastic tank walls — no drilling, no direct contact with liquid required. Whether you need a low-water alert or a full-tank reminder, this sensor delivers reliable, hands-free monitoring for your home or workshop devices.
Key Features
- Non-Contact Detection: Senses liquid levels through the walls of plastic tanks — no need to penetrate or modify your container.
- Wide Voltage Compatibility: Operates on 3.3V to 5V, making it compatible with most microcontrollers and DIY electronics platforms.
- Dual Alert Functions: Supports both water shortage and full water reminder modes to suit a variety of applications.
- Easy Wiring: Color-coded sheathed wire for quick, no-confusion installation — Yellow = signal, Red = positive (+), Black = negative (−).
- Versatile Applications: Ideal for hand sanitizer dispensers, water dispensers, aroma diffusers, fish tanks, humidifiers, and more.
- Compact & Lightweight: Easily mounts flush against a plastic water tank for a clean, unobtrusive installation.
Specifications
| Operating Voltage | 3.3V – 5V DC |
| Detection Method | Capacitive, non-contact |
| Wire Type | Sheathed wire (3-wire: Signal, +, −) |
| Compatible Tanks | Plastic containers (non-metal) |
| Environment | Dry environment; avoid high temperatures |
| Limitations | Cannot detect pure alcohol or gasoline |
| Package Contents | 1 × Capacitive Liquid Level Sensor |
| Country of Origin | Made in China |
Typical Applications
- Automatic hand sanitizer machines
- Water dispensers & coolers
- Aroma diffusers & humidifiers
- Aquarium water level monitoring
- DIY Arduino / Raspberry Pi projects
- Coffee machines & water tanks
Usage Notes
- Designed to work through plastic tank walls — do not submerge the sensor itself.
- Use only in dry environments and avoid exposing to high temperatures.
- Not suitable for detecting pure alcohol or gasoline.
- Due to manual measurement, please allow a tolerance of 1–3 mm.
- Actual product color may vary slightly from images due to monitor calibration differences.
Related Products You May Like
- "1% Better Every Day" Motivational Canvas Wall Art Print
- "Everything Is Figureoutable" Sage Green Quote Canvas Wall Art
For guidance on safe electronics handling and DIY project best practices, visit the U.S. Consumer Product Safety Commission (CPSC).
Learn more: Level sensor
Frequently Asked Questions
Q: Can this capacitive liquid level sensor detect water through a glass or metal tank wall?
A: No — this sensor is designed to work through plastic tank walls only. Glass and metal surfaces will interfere with the capacitive detection method. For best results, mount the sensor flush against a thin-walled plastic container.
Q: Is this water level sensor compatible with Arduino or Raspberry Pi?
A: Yes! The sensor operates at 3.3V–5V, making it fully compatible with Arduino, Raspberry Pi, ESP32, and most other popular DIY microcontroller platforms. Simply connect the color-coded wires (signal, positive, negative) to your board and you're ready to go.
Q: What liquids can this sensor detect?
A: This sensor works reliably with water and most water-based liquids (e.g., liquid soap, diffuser water). It cannot detect pure alcohol or gasoline due to their low dielectric properties. It is well-suited for hand sanitizer machines, water dispensers, and aroma diffusers.
Q: Does the sensor need to be submerged in the liquid?
A: No — that's the key advantage of this non-contact design. The sensor attaches to the outside of your plastic tank and detects the liquid level through the wall, keeping the electronics completely dry and protected.
