Delock Forked Light Barrier 5 mm Type K with 4 x Open Cable Ends PNP L/D Switchable 2 m

For precise object detection in tight spaces, the Delock 91865 forked light barrier stands out with its 5 mm slot width and 15 mm slot depth, making it ideal for counting, positioning, and edge detection in automated machinery. Unlike bulky sensors that require separate emitter and receiver alignment, this single-unit fork design ensures perfect optical alignment out of the box, reducing setup time and eliminating misalignment errors. The PNP output with light-on/dark-on switching via a simple wire connection offers flexibility for diverse control systems, while the 2 m PVC cable with open ends allows direct wiring to PLCs, relays, or custom connectors.

Highlights

• 5 mm slot width and 15 mm slot depth for detecting small objects like labels, gears, or wire
• PNP output, light-on/dark-on (L/D) switchable via control wire
• Fast response time of 0.1 ms and 5 kHz switching frequency for high-speed applications
• Infrared LED light source at 880 nm, invisible and reliable
• Robust PBT housing with IP67 protection for harsh industrial environments
• Yellow LED indicator for easy output status monitoring
• M3 screw mounting holes with 15 mm spacing for secure installation
• CE and RoHS certified

In daily use

Install the sensor using the two M3 screw holes, connect the four open cable ends (brown: +10–30 V DC, blue: 0 V, black: output, white: L/D selection), and set the switching mode by tying the white wire to positive or negative. The yellow LED confirms detection, and the PNP output can drive up to 100 mA directly. With an operating temperature range from -25 °C to 55 °C and IP67 sealing, it performs reliably in dusty, wet, or vibrating conditions. Typical applications include detecting the presence of small components on conveyors, monitoring fill levels in transparent tubes, or counting revolutions on gear teeth.

Full specifications

• Sensor type: Forked light barrier (slot sensor)
• Sensing gap width: 5 mm
• Sensing gap depth: 15 mm
• Output type: PNP, light-on/dark-on switchable
• Operating voltage: 10–30 V DC
• Max. output current: 100 mA
• Max. current consumption: 20 mA
• Switching frequency: 5 kHz
• Response time: 0.1 ms
• Light source: Infrared LED, 880 nm
• Connection: 4 x open cable ends, 2 m length
• Cable material: PVC
• Housing material: PBT
• Protection class: IP67
• Operating temperature: -25 °C to 55 °C
• Indicator: Yellow LED
• Mounting: M3 screw holes, 15 mm spacing
• Certifications: CE, RoHS

Final note

The Delock 91865 combines compact dimensions, high-speed response, and robust construction, making it a dependable choice for industrial automation tasks where space is limited and precision is critical.