| Part | Description | 
| BD-E521RD | Red, anode,  dual digit LED display | 
| BD-F521RD | Red, cathode,  dual digit LED display | 
| BF-A521RD | Red, anode, overflow single digit LED display | 
| BF-C521RD | Red, cathode, overflow single digit LED display | 
| BL-B4521 | Hi-eff red, standard LED lamp (round type) | 
| BL-C4521 | Hi-eff red, standard LED lamp (rectangular type) | 
| BL-R4521F | Hi-eff red, standard LED lamp (rectangular type) | 
| BS-A521RD | Red, anode, single digit LED display | 
| BS-C521RD | Red, cathode, single digit LED display |