| Horizontal Symbol | Vertical Symbol | Description |
 HLT1RM |
 VLT1RM |
Red Master Test |
 HLT1GM |
 VLT1GM |
Green Master Test |
 HLT1AM |
 VLT1AM |
Amber Master Test |
 HLT1YM |
 VLT1YM |
Yellow Master Test |
 HLT1BM |
 VLT1BM |
Blue Master Test |
 HLT1WM |
 VLT1WM |
White Master Test |
 HLT1CM |
 VLT1CM |
Clear Master Test |
Note:
Lights receive text to indicate the color at the time of insertion.