Overview
The Banner Q20E-78017 is a rectangular photoelectric emitter from Banner Engineering’s World-Beam Q20 series. Designed for opposed-mode (through-beam) sensing, this compact sensor delivers reliable detection at ranges up to 12 meters. The visible red light (624nm) and sealed thermoplastic housing make it ideal for manufacturing, packaging, and automation applications where durability and consistent performance are critical.
Key Features
- 12-meter sensing range — sufficient for most industrial through-beam applications
- Visible red light (624nm) — aids alignment and troubleshooting during installation
- IP67/NEMA 6 rating — sealed against dust and moisture ingress
- 4-wire cable termination — pre-wired with 6.5 ft (2 m) cable and bare-end flying leads
- Thermoplastic housing — durable construction rated for -20°C to +60°C ambient operation
- Rectangular compact form factor — space-efficient mounting in confined spaces
Technical Specifications
- Sensing Mode: Opposed (through-beam)
- Light Type: Visible red (624nm)
- Sensing Range: 12 m
- Supply Voltage: 10–30 VDC
- Switching Current: 100 mA
- IP Rating: IP67 (NEMA 6)
- Operating Temperature: -20°C to +60°C
- Body Style: Rectangular
- Termination: 4-wire cable, 6.5 ft (2 m), bare-end flying leads
- Accessories: Cordsets, brackets, reflectors, and apertures available
Typical Applications
- Conveyor line object detection and counting
- Packaging and filling machinery
- Material handling and sortation systems
- Machine safety and position sensing
- Woodworking and metal fabrication
- Quality control and web monitoring
Compatibility & Replacements
Compatible With
- Standard industrial PLC and motion control systems accepting 10–30 VDC sensor inputs
- Discrete 24 VDC automation control circuits
- Allen-Bradley, Siemens, Mitsubishi, and Omron PLCs with analog or discrete input modules
- Industrial safety relay modules and safety controllers
Replaces / Drop-In Replacement For
- Banner Q20E (standard World-Beam Q20 series emitter)
- Legacy photoelectric emitters with similar electrical specifications (10–30 VDC, 100 mA output)
Works With
- Banner World-Beam Q20R receiver or equivalent through-beam receiver
- PLC discrete input modules (24 VDC rated)
- Standard industrial relay logic and safety circuits
- EtherNet/IP and PROFIBUS DA gateways for remote monitoring (via appropriate coupler modules)


















