From Halopedia, the Halo wiki
The M365 universal application C-class detonator is an explosive detonator employed by the UNSC, compatible with most standard UNSC explosive types including C10 charges. An ample supply of them was always carried by Frederic-104.
List of appearances
- Halo: Shadows of Reach (First mentioned)
- Halo: Shadows of Reach, chapter 6