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 The presence of voltage during operation is indicated by the corresponding LED light included in this phase of the circuit.
  
Implementation
 
| Type | LED Colours | 
| LK-713 G | 3× green | 
| LK-713 Y | 3× yellow | 
| LK-713 R | 3× red | 
| LK-713 B | yellow-green-red | 
Order labelling method
 
 LK-713   K ——  colour
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