This part series is currently available in 24 VDC, widely used as an Industry standard and in 5 colors:
| White Nickel | Color | Voltage | Typ Current (mA) | Typical Intensity (mcd) |
| 556-10B4-304F | White | 24VDC | 32 | 61000 |
| 556-15B4-304F | Red | 24VDC | 46 | 22000 |
| 556-16B4-403F | Green | 24VDC | 32 | 41500 |
| 556-17B4-304F | Yellow | 24VDC | 46 | 13500 |
| 556-18B4-304F | Blue | 24VDC | 32 | 13000 |