

Accessories
SICK PL40A Sensor
SICK PL40A reflector plate, part 1012720. 40 mm class counter-reflector for medium-range light barrier applications.
Overview
The SICK PL40A (part number 1012720) is a reflector plate of the PL series for retro-reflective photoelectric sensors. With its 40 mm class format, it offers a good balance between size and optical return for medium-range light barrier applications.
How It Works
The reflector returns the sensor beam parallel to its incidence direction, allowing the retro-reflective sensor to monitor the path with single-sided electronics. Interruptions of the returned light trigger detection.
Key Features
- Reflector plate, 40 mm class
- Part number 1012720
- Balanced size for medium-range barriers
- Stable optical return for reliable switching
- Simple mounting opposite the sensor
Typical Applications
- Counter reflectors for packaging machinery barriers
- Light path completion on conveyors
- Object detection with retro-reflective sensors
- Retrofit reflectors for existing installations
Specifications
Attribute | Value |
|---|---|
Model | SICK PL40A |
Part number | 1012720 |
Accessory type | Connection and mounting technology |
Installation and Setup Notes
Install the accessory according to the mating product's documentation, verify secure mechanical fixation and strain relief for cables, and inspect the connection during regular machine maintenance to keep the sensing chain reliable.
Frequently Asked Questions
Which sensors pair with PL40A?
Retro-reflective sensors specifying a 40 mm class reflector.
Can it be used outdoors?
With protection from weather and soiling, yes.
How does size relate to range?
Larger reflectors support longer ranges; match the sensor family specification.



