tripwire

the soldier set up a tripwire to alert him of intruders.

the tripwire mechanism was designed to trigger an alarm.

he carefully avoided the tripwire while navigating the dark room.

the security system included a tripwire for added protection.

the detective discovered a tripwire in the abandoned warehouse.

they used a tripwire to catch the thief in the act.

the tripwire snapped, signaling that someone had crossed the line.

setting up a tripwire requires careful planning and execution.

in the movie, the hero evaded the tripwire just in time.

the tripwire was hidden beneath the leaves to prevent detection.