M04 Non-Contact Water Level Detection Module – Capacitive Liquid Sensor
Detect water levels without any direct contact with liquids. The M04 Non-Contact Water Level Sensor uses advanced capacitive sensing technology to detect liquid through container walls — no electrodes in water, no corrosion, no leaks. Perfect for Arduino, ESP32, and Raspberry Pi projects.
60,00 EGP
Description
The M04 Non-Contact Water Level Detection Module (水位检测模块) is a smart capacitive sensor designed to detect the presence or absence of liquid through non-metallic container walls such as glass, plastic, and ceramic — without any physical contact with the liquid itself.
Whether you’re building an automatic plant watering system, a water tank monitor, a coffee machine level detector, or a leak alert system, the M04 delivers reliable and corrosion-free liquid sensing.
✅ Key Features
- Non-contact detection — senses liquid through container walls up to ~13mm thick (varies by material)
- No exposed electrodes — eliminates corrosion, electrolysis, and contamination risks
- Works with any non-metallic container — glass, plastic, ceramic, resin
- Single digital output — HIGH/LOW signal, easy to read with any microcontroller
- Compact PCB design — mounts easily with adhesive tape or screws
- Low power consumption — suitable for battery-powered IoT projects
- Wide supply voltage — compatible with 3.3V and 5V systems (Arduino, ESP32, STM32, Raspberry Pi)
- Fast response time — near-instant detection when liquid level reaches the sensor position
- No calibration required — works out of the box
📐 Specifications
| Parameter | Value |
|---|---|
| Operating Voltage | 3.3V – 5V DC |
| Output Type | Digital (HIGH / LOW) |
| Detection Method | Capacitive (non-contact) |
| Detectable Wall Thickness | Up to ~13 mm |
| Compatible Materials | Glass, Plastic, Ceramic (non-metallic) |
| Output Logic (liquid detected) | LOW |
| Output Logic (no liquid) | HIGH |
| PCB Dimensions | ~15 × 40 mm (approx.) |
| Connector Pins | 3 pins: + (VCC), – (GND), O (Signal OUT) |
| Operating Temperature | 0°C – 80°C |
| Storage Temperature | -20°C – 85°C |
🔌 Pin Description
| Pin | Label | Description |
|---|---|---|
| 1 | + |
Power supply (3.3V – 5V) |
| 2 | – |
Ground (GND) |
| 3 | O |
Digital signal output |
📦 Package Contents
- 1× M04 Non-Contact Water Level Detection Module
💡 Applications
- Automatic irrigation & plant watering systems
- Water tank full/empty alert
- Coffee machine & beverage dispenser level detection
- Aquarium water level monitoring
- Leak detection systems
- Home automation with Arduino / ESP32 / NodeMCU
- Industrial liquid level indicators
Specification
General
| WeightWeight | 0,0000 g |
|---|---|
| Detection Method | Non-Contact Capacitive |
| Operating Voltage | 3.3V, 5V |
| Output Type | Digital HIGH/LOW |
| Output Signal (Liquid Detected) | LOW |
| Output Signal (No Liquid) | HIGH |
| Wall Thickness (Max) | 13mm |
| Compatible Materials | Glass, Plastic, Ceramic, Resin |
| Connector Pins | VCC (+), GND (−), Signal OUT (O) |
| PCB Dimensions | 15 × 40 mm |
| Operating Temperature | 0°C – 80°C |
| Storage Temperature | −20°C – 85°C |
| Compatible Boards | Arduino, ESP32, STM32, NodeMCU, Raspberry Pi |
| Applications | Water Tank Monitor, Irrigation System, Aquarium, Leak Detection, Beverage Machine |
| Package Contents | 1× M04 Water Level Detection Module |
