SNDR
Fire alarm sounder plan symbol
Plan symbol for a fire alarm sounder that gives the audible evacuation signal.
IEC
IEC · MCP
Manual call point plan symbol
Fire alarm plan symbol for a manual call point that occupants operate to raise the alarm, placed at exits.
In plain English
What does Manual call point plan mean?
Manual call points, often break-glass or resettable push units, are drawn as a square with a filled or crossed inner square, or a circle with a dot, at their wall position. They are placed at storey exits and exits to open air so a person leaving can raise the alarm.
A simple example
Mounting height and travel distance to the nearest call point are set by the fire code. The plan allows inspectors to check these quickly.
What the drawings help you do
The symbol does not show whether the unit is resettable or break-glass, or whether it has a protective cover. The schedule states this.
This particular reference
Fire alarm plan symbol for a manual call point that occupants operate to raise the alarm, placed at exits. A bell push or assistance call button looks similar on a plan; the call point belongs to the fire alarm system.
- Schematic
- A drawing showing function and connections rather than physical appearance.
Read the source: IEC graphical symbols for diagrams · Electrical installation design methodology and references
IEC · Manual call point
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 · MCP
What it represents
Manual call points, often break-glass or resettable push units, are drawn as a square with a filled or crossed inner square, or a circle with a dot, at their wall position. They are placed at storey exits and exits to open air so a person leaving can raise the alarm.
Mounting height and travel distance to the nearest call point are set by the fire code. The plan allows inspectors to check these quickly.
The symbol does not show whether the unit is resettable or break-glass, or whether it has a protective cover. The schedule states this.
How to read it
- Check positions at each exit.
- Check travel distance coverage.
Information to show or reference
- Tag loop and address.
- State unit type and cover.
- Give mounting height.
A distinction that matters
A bell push or assistance call button looks similar on a plan; the call point belongs to the fire 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 plans; independently drawn here.
Electrical installation design methodology and references
Installation design context: life-safety systems are coordinated with the building electrical design.
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.
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IEEE / ANSI
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Push button plan mark
Installation plan mark for a momentary push button, such as a door bell push or call button, shown as a small circle with a dot.
IEC
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