Overview
The Banner QS18VN6DQ8 is a miniature diffuse photoelectric sensor from the WORLD-BEAM QS18 Series, designed for universal mounting in tight spaces. This all-purpose sensor combines robust optical performance with space-efficient design, making it an ideal replacement for hundreds of other sensor styles. The QS18 series delivers industrial-grade reliability in a compact 18 mm threaded barrel housing.
Key Features
- Diffuse sensing with 450 mm maximum range
- 10–30 V DC input power, complementary solid-state NPN output
- M12 integral QD connector for quick-disconnect reliability
- IP67 enclosure rating and NEMA 4X corrosion resistance
- Bright LED operating status indicator visible from 360°
- Universal 18 mm threaded housing for easy retrofit installations
Technical Specifications
- Sensing Mode: Diffuse
- Sensing Range: 0–450 mm
- Supply Voltage: 10–30 V DC
- Output: Complementary solid-state NPN (SPDT)
- Connector: M12 integral QD (4-pin)
- IP Rating: IP67
- NEMA Rating: NEMA 4X
- Housing: 18 mm threaded barrel, universal design
- Weight: 1.72 lbs
- Approvals: NEMA 4X rated for chemical and corrosion environments
Typical Applications
The QS18VN6DQ8 is well-suited for:
- Parts detection and counting on assembly lines
- Package presence detection in packaging machinery
- Object position detection in material handling systems
- Sorting and inspection systems with diffuse targets
- Automation retrofits requiring compact sensor footprints
Compatibility & Replacements
Compatible With
- M12 QD (quick-disconnect) industrial connectors
- Banner Engineering WORLD-BEAM sensor networks
- Industrial automation control systems supporting 10–30 V DC inputs
- Standard DIN-43650 and M12 pneumatic/electrical cabinets
- PLC and motion control systems with 24 V DC logic inputs
Replaces / Drop-In Replacement For
The QS18VN6DQ8 serves as a direct replacement for other Banner QS18 series diffuse sensors with identical electrical and mechanical specifications. Verify connector type and sensing range with your integrator before ordering to ensure compatibility with legacy installations.
Works With
- M12 quick-disconnect (QD) interface for tool-free cable management
- 4-pin M12 connectors (standard industrial automation)
- Complementary NPN solid-state output compatible with PLC digital input cards
- Standard 24 V DC control logic in Siemens, Allen-Bradley, Mitsubishi, and Omron systems
- Banner engineering software for sensor configuration and diagnostics


















