Pro-Range XKC-KD200-NPN-NO Infrared Sensor - DC 5-24V, Non-Contact Detection

This sensor has an NPN open-collector output in a Normally Open (NO) configuration. Connect the brown wire to your DC positive supply (5-24V), the blue wire to DC negative (GND), and the black wire is the signal output. The output transistor sinks current to ground when activated, so you typically connect the black wire to your controller's digital input pin and use a pull-up resistor to your controller's logic voltage (e.g., 5V or 3.3V).

No, the XKC-KD200-NPN uses infrared light for detection, which cannot penetrate metal walls. It is specifically designed for use with non-metallic containers such as those made from plastic, glass, or acrylic. The infrared beam passes through these transparent or translucent materials to detect the presence or level of liquid inside.

Adjust the sensitivity using the small potentiometer on the sensor body. Turning it clockwise typically increases sensitivity (detects through thicker walls or from farther away), while counter-clockwise decreases it. Fine-tune it while the sensor is mounted on your target container to achieve reliable triggering without false positives from container material or ambient light.