PIR-L
Lighting presence detector plan mark
Plan mark for a ceiling or wall sensor that switches lighting automatically according to occupancy.
IEC
IEC · PIR
Intruder motion detector plan symbol
Security plan symbol for a passive infrared or dual-technology motion detector reporting to an intruder alarm.
In plain English
What does Intruder motion detector plan mean?
Intruder motion detectors sense movement, usually by passive infrared, sometimes combined with microwave. Security plans draw a small box or semicircle at the corner mounting position with the detection fan drawn into the room so coverage can be checked.
A simple example
Each detector is wired to an alarm panel zone or an addressable bus, and the plan tags its zone. Detectors must not see heaters, moving curtains or direct sunlight, so the fan on the plan is a practical design check. The symbol does not state pet immunity, technology or masking detection. The security schedule records these.
What the drawings help you do
Check the coverage fan against windows and heat sources. Read the zone tag. A lighting presence detector switches luminaires; this detector reports to an intruder alarm system.
This particular reference
Security plan symbol for a passive infrared or dual-technology motion detector reporting to an intruder alarm. A lighting presence detector switches luminaires; this detector reports to an intruder alarm system.
- Terminal
- An identified point where a conductor connects.
- Schematic
- A drawing showing function and connections rather than physical appearance.
Read the source: IEC graphical symbols for diagrams · Autodesk IEC-60617 preview: Radiation qualifiers · Electrical installation design methodology and references
IEC · Motion detector, intruder alarm
IEC 60617 installation-plan style (architectural and topographical installation symbols); independently drawn, not certified IEC geometry or a database identifier.
Shown as an independently authored educational illustration. Use the cited publication and drawing legend to verify the required drafting form.
GA · PIR
What it represents
Intruder motion detectors sense movement, usually by passive infrared, sometimes combined with microwave. Security plans draw a small box or semicircle at the corner mounting position with the detection fan drawn into the room so coverage can be checked.
Each detector is wired to an alarm panel zone or an addressable bus, and the plan tags its zone. Detectors must not see heaters, moving curtains or direct sunlight, so the fan on the plan is a practical design check. The symbol does not state pet immunity, technology or masking detection. The security schedule records these.
How to read it
- Check the coverage fan against windows and heat sources.
- Read the zone tag.
Information to show or reference
- Show coverage fan.
- Tag zone.
- State detector technology.
A distinction that matters
A lighting presence detector switches luminaires; this detector reports to an intruder alarm system.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
IEC graphical symbols for diagrams
IEC graphical symbol context for installation and communication plans; independently drawn here.
Autodesk IEC-60617 preview: Radiation qualifiers
Public IEC-oriented radiation qualifiers relevant to infrared and optical marks.
Electrical installation design methodology and references
Installation design context for coordinating low-current systems with power and lighting.
About this graphic
This illustration was authored independently by Elora Grid to explain the concept. It is not reproduced from a customer drawing, an official standard graphic or a manufacturer CAD file. Its correspondence to an exact IEC or IEEE symbol identifier has not been certified.
SVG and DXF downloads contain this original artwork. DXF uses unscaled drawing units; a GA envelope supplies no product dimensions, clearances or fabrication information. Original artwork is available under CC BY 4.0. Third-party references retain their own terms.
Explore related references
Put the reference into a drawing workflow.
Elora Grid helps electrical teams work with drawings, specifications and equipment information. Explore the drafting workflow or join the early-access waitlist.