Intelligent non-contact liquid level sensor adopts advanced signal processing technology and high-speed signal processing, so the detection of the liquid level of the airtight container is not affected by the w thickness of the container. With this measurement method, the level of the liquid in the tank can be measured without drilling the w of the tank.
Stick the liquid level sensor on the outer w of the tank above the minimum liquid level and below the maximum liquid level (high and low level).
It can indicate the levels of various liquids, toxic substances, acids, alkalis and kinds of liquids.

Features:
Adjus sensitivity.
High stability, high sensitivity, good interference tolerance.
Compatible with most DC 5...12V power adapters.
It can also indicate the level of boiling water.
It can also detect sm particles in the liquid (sand, dust, etc...)
Sui for plastic, glass, ceramic, etc... wed tanks.

Specifications:
Model: XKC-Y25-NPN
Output: NPN (low signal level, switches GND)
Input Voltage (InVCC): DC 5...12V
Current: 5mA
Output Current: 1...50mA
Response Time: 500mS
Operating Temperature: 0...105°C
Induction Thickness (sensitivity): 0...13 mm
Humidity: 5...100%
Material: ABS
Ingress Protection: IP67

Pinout:
1 (Brown): VCC (DC 5 ... 12V)
2 (Yellow) "OUT": Output
3 (Blue): GND
4 (Black) "M": Output logic translator:
- Connected to GND, the output will be low level if no liquid is detected,
- Connected to VCC, the output will be low level if liquid is detected

Attention!
The maximum w thickness of tank can be 13 mm.
The non-contact liquid level sensor NOT FOR USE IN METAL CONTAINERS!!!
The container w must be thoroughly cleaned before gluing the sensor. Care must be taken to ensure that there is no air gap (air bubble) between the sensor and the tank w.