Overview
The Banner QS18VN6LPQ8 is a World Beam series polarized retro-reflective photoelectric sensor designed for general-purpose industrial detection applications. This sensor operates across a 3.5 m sensing range, accepts 10-30 V dc input, and delivers complementary solid-state NPN output with integral 4-pin M12 connector. The unit features a rectangular thermoplastic housing with acrylic lens, IP67/NEMA 6 rating, M18 threaded mount, and visible red light indication. Ideal for conveyor monitoring, parts detection, and presence/absence sensing in manufacturing and warehouse environments.
Key Features
- 3.5 meter polarized retro-reflective sensing range with 0.6 ms response time
- NPN transistor output with complementary NO/NC logic and Light-ON or Dark-ON operation selectable via potentiometer
- IP67 environmental rating with thermoplastic housing and acrylic lens
- M18 threaded mount, rated for -20°C to +70°C ambient operation
- Pre-equipped 4-pin Euro-style M12 connector for quick integration
- Visible red light beam for easy alignment and troubleshooting
Technical Specifications
- Series: QS18 (World Beam)
- Sensing Range: 3.5 m
- Input Voltage: 10–30 VDC (12/24 VDC nominal)
- Output Type: Complementary Solid-State NPN
- Response Time: 0.6 ms
- Connector: 4-pin M12 Euro-style (integral)
- Housing Material: Thermoplastic with acrylic lens
- IP Rating: IP67 / NEMA 6
- Operating Temperature: -20°C to +70°C
- Mounting: M18 threaded barrel
- Weight: 0.10 lbs
- Detection Mode: Polarized retro-reflective with potentiometer adjustment
Typical Applications
- Conveyor belt object detection and position sensing
- Package or parts counting on production lines
- Bin full/empty monitoring
- Material presence/absence detection in assembly operations
- Door/gate open/closed status sensing
- Warehouse and logistics automation
- General industrial motion control and automation
Compatibility & Replacements
Compatible With
- Standard 24 VDC and 12 VDC industrial control systems
- PLC and relay-based control logic with NPN input modules
- M18 mounting hardware and sensor brackets
- M12 quick-disconnect connector ecosystems
- Industrial automation networks requiring discrete sensor inputs
Replaces / Drop-In Replacement For
- This QS18 series sensor serves as an ideal replacement for hundreds of other 18 mm photoelectric sensor styles
- Verify specific model interchangeability with your system integrator before ordering to ensure connector compatibility
Works With
- M12 connector quick-disconnect sensor cables
- Standard 24 VDC and 12 VDC power supplies
- NPN input modules on industrial PLCs and controllers
- Discrete I/O terminal blocks and sensor interface modules


















