The Dead Man's Trigger auto-detonates all of your planted explosives when you are killed.
— In-game description.
Dead Man's Trigger is a Tier 2 Pilot Kit that appears in Titanfall. This will detonate all Satchel Charges or Arc Mines placed by you 1 second after you die. This Kit can be useful to Snipers as it'll allow them to kill or at least heavily damage someone who manages to sneak up on them by placing Satchel Charges nearby. The Kit is also commonly used in Hardpoint matches to set off any Arc Mines or Satchel Charges placed near or around the Hardpoints placed by defending team as a contingency should they be killed.