U-shaped (slot) Photoelectric Sensor LU-U24N Ultra-small NPN

U-type photoelectric slot sensor LU-U24N, LU-U24N U-Type Photoelectric Switch Sensor

The LU-U24N is an NPN output, ultra-small, U-shaped (slot) photoelectric sensor. It is used in factory automation for the precise detection of small, opaque objects.

Specifications

• Detection method: Through-beam type, within a U-shaped slot.
• Sensing distance: 5 mm groove width.
• Minimum detectable object: 1.2 x 2.0 mm opaque object.
• Power supply voltage: 12 to 24 V DC.
• Output type: NPN open-collector transistor.
• Response frequency: 2 kHz.
• Light source: Infrared LED (940 nm).
• Protection: Built-in protection for reverse polarity, short-circuit, and surge.
• Connection: Cable-type with a 2-meter, 3-core cable.

Functionality and applications

The sensor operates by emitting an infrared light beam from a transmitter to a receiver across a 5 mm slot. When an object passes through this slot and interrupts the light beam, the sensor detects the change and triggers an NPN output.

This precise and rapid detection makes it suitable for applications such as:

• Counting items on a production line.
• Monitoring the position of small objects.
• Detecting the start or end position of a workpiece.