Answer: tripwire

AnswerCrossword Clue
TRIPWIRETrap trigger
TRIPWIRETrap triggerer
TRIPWIRETrigger on a trap
TRIPWIREExplosives detonator
TRIPWIREBooby trap feature
TRIPWIRESecurity alarm trigger
tripwirea low-placed hidden wire
tripwirea low-placed concealed wire used especially in warfare to trip an enemy or trespasser and usually to trigger an alarm or explosive device when moved