Peaceful Pleasures Health and Wellness
Capacitive Liquid Level Sensor 3.3V–5V Non-Contact Detector
Capacitive Liquid Level Sensor 3.3V–5V Non-Contact Detector
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Non-Contact Capacitive Liquid Level Sensor with Switch Controller
Never worry about running out of water or overfilling a tank again. This Capacitive Liquid Level Sensor offers reliable, non-contact liquid detection through plastic tank walls — no drilling, no direct liquid exposure. Operating at 3.3V to 5V, it's a compact, easy-to-wire solution perfect for DIY electronics projects, home appliances, and automation setups.
Key Features
- Non-Contact Detection: Senses liquid levels through plastic walls without touching the liquid — keeps the sensor dry and corrosion-free.
- Wide Voltage Compatibility: Works with both 3.3V and 5V systems, compatible with Arduino, Raspberry Pi, and most microcontrollers.
- Dual Alert Functionality: Supports water-shortage reminders AND full-water reminders via built-in switch controller output.
- Color-Coded Wiring: Simple 3-wire connection — Red = Positive, Black = Negative, Yellow = Signal.
- Versatile Applications: Ideal for hand sanitizer machines, water dispensers, aroma diffusers, aquarium setups, coffee makers, and more.
- Sheathed Wire Construction: Durable sheathed cable for clean and reliable connections in your project.
Specifications
| Operating Voltage | 3.3V – 5V DC |
| Detection Method | Capacitive, non-contact (through plastic walls) |
| Wire Type | Sheathed wire (3-wire: Red, Black, Yellow) |
| Compatible Liquids | Water, most common liquids (NOT pure alcohol or gasoline) |
| Environment | Dry environment; avoid high temperatures |
| Package Contents | 1 × Capacitive Liquid Level Sensor |
| Country of Origin | Made in Mainland China |
Important Usage Notes
- Must be used in close contact with a plastic water tank wall for accurate detection.
- Cannot detect pure alcohol or gasoline.
- Use only in dry environments and avoid exposure to high temperatures.
- Manual measurement tolerance: ±1–3 mm. Color may vary slightly from images due to monitor settings.
Great for Makers & DIY Enthusiasts
Whether you're building a smart home device, automating a water dispenser, or prototyping an IoT project, this liquid level sensor is a plug-and-play solution that saves time and effort. Learn more about safe electronic component usage from the U.S. Consumer Product Safety Commission (CPSC).
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Frequently Asked Questions
Q: Can this capacitive liquid level sensor detect liquids through any material?
A: This sensor is designed to work through plastic tank walls. It may not function correctly through metal, glass, or other non-dielectric materials. For best results, mount it directly against a thin plastic container wall.
Q: Is this water level detector compatible with Arduino and Raspberry Pi?
A: Yes! The sensor operates at 3.3V–5V, making it fully compatible with Arduino, Raspberry Pi, ESP8266, ESP32, and virtually any microcontroller or development board that supports standard logic levels.
Q: What liquids can this sensor detect?
A: This capacitive liquid level sensor works well with water and most common liquids. However, it cannot detect pure alcohol or gasoline. It is commonly used in water dispensers, hand sanitizer machines, and aroma diffusers.
Q: How do I wire the liquid level sensor?
A: Wiring is simple with the 3-wire color-coded cable: connect the Red wire to positive (VCC), the Black wire to ground (GND), and the Yellow wire to your signal/input pin on your controller board.
