| Signal Tower | # of Tower Units | # of LEDs | Color | Voltage | Function |
| STP | 1 | 24 | R (Red) | 120V AC | C (Continuous) |
| 2 | 40 | A (Amber) | 24V AC | F (Flashing) | |
| 3 | G (Green) | 24V DC | |||
| 4 | B (Blue) | ||||
| W (White) |
| Signal Tower | # of Tower Units | # of LEDs | Color | Voltage | Function |
| STP | 1 | 24 | R (Red) | 120V AC | C (Continuous) |
| 2 | 40 | A (Amber) | 24V AC | F (Flashing) | |
| 3 | G (Green) | 24V DC | |||
| 4 | B (Blue) | ||||
| W (White) |