Allen-Bradley 42EF-P2MPB-A2 Polarized Retroreflective PNP Photoelectric Sensor
Available to order
Request a QuoteNeed multiple units or help confirming a model? Contact our team.
Shop with confidence
30-Day Risk-Free Returns & Exchanges
Shop with confidence. If for any reason you are not satisfied, you can take advantage of our hassle-free return and exchange service within 30 days. The seller covers all shipping costs for returns or exchanges—there are no extra shipping fees for you to pay, ensuring a worry-free shopping experience.
Payments
Available payment methods
Service Guarantee
Estimated delivery
Ships from 4 U.S. Warehouses – Contact Us for Estimated Delivery Times.
Product Information
Technical specifications, features, applications and purchasing information.
Allen-Bradley 42EF-P2MPB-A2 Polarized Retroreflective PNP Photoelectric Sensor
The Allen-Bradley 42EF-P2MPB-A2 Photoelectric Sensor is a RightSight polarized retroreflective sensing device used for non-contact object detection in machine and factory control systems. It uses a visible red light source and operates with a reflector to identify objects passing through the sensing path. The sensor provides complementary light-operate and dark-operate PNP outputs, supporting integration with compatible DC control equipment. Its 18 mm cylindrical mounting format and fixed 2 m cable connection support installation in compact machine assemblies and OEM equipment.
Product Features
The polarized retroreflective design helps distinguish the intended reflector from reflective objects in the detection area. Complementary output operation provides both light-operate and dark-operate signals for control-system configuration. The fixed cable connection reduces the need for a separate sensor cordset, while the cylindrical mounting design supports straightforward positioning and replacement. These characteristics make the Allen-Bradley 42EF-P2MPB-A2 Photoelectric Sensor suitable for new machine builds, equipment upgrades, sensor replacement, and routine maintenance work.
Technical Specifications
| Brand | Allen-Bradley |
| Model | 42EF-P2MPB-A2 |
| Product Category | Photoelectric Sensor |
| Product Family | RightSight |
| Product Type | Polarized retroreflective sensor |
| Light Source | Visible red |
| Output Type | PNP, complementary light operate and dark operate |
| Operating Voltage | 10.8–30V DC |
| Maximum Output Current | 100 mA |
| Response Time | 1 ms |
| Sensing Range | 25 mm to 3 m |
| Connection Type | 2 m cable |
| Sensitivity Adjustment | Not adjustable |
| Protection Functions | Short-circuit, reverse-polarity, false-pulse, and overload protection |
Product Advantages
The Allen-Bradley 42EF-P2MPB-A2 Photoelectric Sensor combines non-contact sensing, complementary PNP outputs, visible alignment light, and a fixed cable connection in a compact mounting format. Its standardized RightSight configuration supports component identification during procurement and maintenance. For OEMs and plant maintenance teams, the documented model configuration helps simplify replacement planning and control-panel compatibility checks.
Applications
The sensor can be used for object presence detection, part positioning, product counting, and material-flow monitoring in factory automation, machine equipment, OEM machinery, conveyor control systems, packaging equipment, and automated handling systems where polarized retroreflective sensing is appropriate.
We support online purchase of Allen-Bradley 42EF-P2MPB-A2 Photoelectric Sensor. If you need to make bulk purchases and inquire about other products, please contact our team to inform us of your purchase requirements. We will provide you with information such as quantity quotations, delivery dates, and transportation methods.
Send us your part number and technical requirements.

