Pro-Range XKC-KD200-NPN-NC Infrared Sensor - DC 5-24V, Non-Contact Detection

This sensor provides an NPN open-collector digital output in a Normally Closed (NC) configuration. When no object is detected, the output transistor is OFF (open circuit). When an object is detected within range, the transistor turns ON, pulling the output line to ground (GND). This signal is compatible with PLC digital inputs, microcontroller GPIOs (with a pull-up resistor), and relay modules.

No, the XKC-KD200-NPN-NC uses infrared light, which cannot penetrate opaque metal walls. It is specifically designed for non-contact detection through the walls of transparent or translucent non-metallic containers, such as plastic, glass, or certain composite materials. For metal containers, a different sensing technology like capacitive or ultrasonic would be required.

The module includes an onboard potentiometer for sensitivity adjustment. Use a small screwdriver to turn the potentiometer. Clockwise rotation typically increases sensitivity (detects objects from a greater distance or through thicker walls), while counter-clockwise rotation decreases it. Adjust while observing the output signal with your target material and container in place to achieve reliable triggering without false positives.

While the exact datasheet value should be confirmed, typical NPN outputs on sensors in this class can handle a maximum collector current of 100-200mA. This is sufficient to directly drive small relays, optocouplers, or PLC input modules. Always ensure the connected load does not exceed the sensor's specified maximum current rating to prevent damage to the output transistor.