Leuze KRT18BW.VS5/L6T-M12 Contrast Sensor
The Leuze KRT18BW.VS5/L6T-M12 contrast sensor offers 13 mm operating range, white LED illumination, IO-Link interface, and push-pull outputs control. Manufactured by Leuze, this Leuze Contrast Sensor belongs to the KRT Series and supports 22,000 Hz switching frequency, 12–30 V DC supply, button-based operational controls, M12 5-pin metal connector, bar graph LED display, short response time teach input, and IP67/IP69K protection.
| Brand | Leuze |
| Product Type | Contrast Sensor |
| Product | KRT18BW.VS5/L6T-M12 |
Leuze KRT18BW.VS5/L6T-M12 Contrast Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Design | Cubic |
| Dimension (W x H x L) | 15 mm x 47 mm x 32.5 mm |
| Special version | Short response time Teach input |
| Operating range | 13 mm ± 3 mm |
| Beam path | Focused |
| Light Source | LED, White |
| Light spot size [at sensor distance] | 1 mm x 4 mm [13 mm] |
| Light spot orientation | Vertical |
| Type of light spot geometry | Rectangular |
| Light beam exit | Front |
| Wavelength | - |
| Supply voltage UB | 12 ... 30 V, DC |
| Number of teach inputs | 1 Piece(s) |
| Number of digital switching outputs | 2 Piece(s) |
| Switching output | Transistor, Push-pull |
| Switching principle | IO-Link / light switching (NPN) / dark switching (PNP) |
| Switching frequency | 22,000 Hz |
| Response time | 300 ms |
| Con:1 Function | Data interface Signal OUT Teach input Voltage supply |
| Type of connection | Connector |
| Thread size | M12 |
| Type | Male |
| Material | Metal |
| No. of pins | 5-pin |
| Housing material | Metal |
| Housing color | Silver |
| Type of fastening | Front mounting with thread Through-hole mounting Via optional mounting device |
| Type of display | Bar graph LED |
| Operational controls | Button(s) |
| Ambient temperature, operation | -40 ... 60 °C |
| Ambient temperature, storage | -40 ... 70 °C |
| Degree of protection | IP 67 IP 69K |
The KRT18BW.VS5/L6T-M12 Leuze Button Operational Controls Contrast Sensor is designed for precise contrast detection in industrial automation systems. The KRT18BW.VS5/L6T-M12 operates with a 13 mm operating range and uses a white LED light source for stable detection. It features a 22,000 Hz switching frequency, IO-Link interface, and push-pull transistor outputs. This model is part of the KRT Series and is intended for structured automation environments.
The KRT18BW.VS5/L6T-M12 is used in conveyors, packaging machines, printing systems, and automated assembly lines. Button-based operational controls enable direct parameter setting, while IO-Link communication supports integration into modern control architectures. The focused beam path and vertical light spot geometry help maintain reliable contrast detection on fast-moving production lines.
The KRT18BW.VS5/L6T-M12 reflects Leuze’s engineering standards for contrast sensors in industrial automation. Its IP67 and IP69K protection ratings support use in harsh environments. The M12 5-pin metal connector, bar graph LED display, and robust metal housing ensure dependable installation, making this Leuze Button Operational Controls Contrast Sensor suitable for continuous industrial operation.

