Related Clues:
- It has two terminals
- Track-team race
- Electronic device
- Digital clock's light emitter
- L.E.D. part
- Swim meet event
- Cellphone component
- Baton event
- ''Light-emitting'' electronic device
- Swimming or running event
- Bit of electrical work
- Event with batons
- Four-person race
- Electronics tube
- A race with teams of four runners