StanBon STM40-16NC Light Curtain Sensor - 16 Beams, 40mm Pitch, 680mm Height, 12-24V DC

The STM40-16NC operates on a wide-range 12-24V DC power supply. This flexibility allows for integration with common industrial 24V DC control systems or lower-voltage logic circuits. Ensure your power source is stable and within this range, and observe correct polarity during connection to avoid damage.

Mount the transmitter and receiver units firmly on stable surfaces, ensuring they are directly opposite and parallel to each other. The infrared beams must be aligned so all 16 beams are received. The unit typically includes alignment LEDs; a steady indicator light confirms proper alignment and an unobstructed beam path.

This safety-rated light curtain provides OSSD (Output Signal Switching Device) signals. These are dual-channel PNP or NPN transistor outputs designed to connect directly to safety relays, PLC safety inputs, or a machine's main control unit. Upon beam interruption, the outputs switch state to signal an immediate stop command.

A 40mm beam pitch means the center-to-center distance between adjacent infrared beams is 40mm. This resolution is suitable for detecting the presence of fingers or hands, making it effective for personnel protection applications as defined by relevant machinery safety standards (e.g., ISO 13855).

With a typical IP54 ingress protection rating, the sensor is protected against dust and water splashes from any direction, making it suitable for most indoor industrial environments. For outdoor use or areas with heavy dust, direct water jets, or chemical exposure, a higher IP-rated housing or additional protective enclosure is recommended.