white, red and green light flashing thrice every 20 seconds (Q108890259)
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light characteristic: Fl(3) WRG 20s
- Fl(3) WRG 20s
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | white, red and green light flashing thrice every 20 seconds |
light characteristic: Fl(3) WRG 20s |
|
Statements
20 second
0 references
Fl(3) WRG 20s
0 references