# Photoelectric emitter-receiver switch

Canonical URL: https://eloragrid.ai/symbols/photoelectric-emitter-receiver-switch
Publisher: Elora Grid
Updated: 2026-10-13
Lookup label: PHOTO
Drawing use: Schematic
Reference families: IEC, Manufacturer

A photoelectric emitter-receiver device uses an optical path to determine a switching output.

## What it represents

A photoelectric emitter-receiver device uses an optical path to determine a switching output. The schematic needs the supply and output connections, while the layout defines the optical arrangement.

## How to read it

- Establish whether the indicated state corresponds to a received or interrupted beam.
- The preview is an original explanation of this function. Match the actual drawing convention to its legend and the selected equipment documentation.

## Information to show or reference

- Show supply and output
- Define light-on or dark-on function
- Reference emitter/receiver arrangement

## Important distinction

Optical detection is not the same sensing principle as inductive or capacitive proximity.

## Facts

- Drawing role: Actuated indication
- Representation scope: Functional concept; not an official standard graphic or a product footprint
- Public vendor block reference: HPE11B16, VPE11B16 (Autodesk identifiers; not IEC symbol numbers)
- Identifier status: The short label is a functional lookup label, not an assigned IEC or IEEE symbol number. Any separately listed Autodesk code is a verified vendor block name.

## Public references

- [AutoCAD Electrical: Photoelectric emitter/receiver switches](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-15ABE47A-723F-4004-BF2A-9CC285DE7882.htm) — Autodesk. Public documentation of this equipment function or named vendor variant; the illustration is independently authored and is not the source graphic.

## Graphic scope

Independent original educational concept illustration by Elora Grid. Not a certified standards graphic or manufacturer footprint. Unitless; not to scale. Original artwork licence: https://creativecommons.org/licenses/by/4.0/. Publisher material is linked only.