The XKC-Y25 NPN Intelligent Non-Contact Liquid Level Sensor is a high-reliability external liquid detection module designed to sense liquid levels without direct contact. Using advanced capacitive sensing technology, it can detect water and other liquids through non-metallic containers, eliminating contamination and corrosion risks.
Ideal for automation systems, smart appliances, water tanks, coffee machines, and DIY electronics projects.
⚙️ Technical Specifications
Model: XKC-Y25
Output Type: NPN (open collector)
Working Voltage: 5V – 24V DC
Detection Method: Non-contact capacitive sensing
Detection Thickness: Up to ~20mm (non-metallic container wall)
Response Time: < 500ms
Protection: Waterproof sensor head
Status Indicator: Built-in LED
🔌 How It Works
The sensor is mounted externally on the outside wall of a plastic, glass, or ceramic container. It detects liquid presence inside the container without touching the liquid itself.
When liquid reaches the sensing point:
Output switches (NPN signal)
LED indicator lights up
🚰 Common Applications
Water tank level monitoring
Smart dispensers & coffee machines
Aquarium systems
Medical equipment
Industrial liquid monitoring
IoT & automation projects
⭐ Key Advantages
Non-contact detection (no contamination)
No corrosion or probe degradation
High sensitivity and stability
Easy installation (no drilling required)
Long service life
⚠️ Important Notes
Works only through non-metallic containers (plastic, glass, etc.).
Not suitable for metal tank walls.
Verify wiring for NPN output compatibility with your controller (may require pull-up resistor).
💡 Ideal For
Perfect for engineers, automation installers, makers, and STEM students building smart liquid monitoring systems.
