Cyalume ChemLight Military Grade Surface Trip Flare, 9a ^2 Length x 6a ^2 Width x 2a ^2 Height, Orange, Ultra-High Intensity-5 Minute Duration Cyalume surface trip flare. Proven by the U.S. military, the surface trip flare is safe for use in any environment, under any conditions. When triggered by a trip wire, it activates a 6-inch ChemLight lightstick. Recommended by swat teams for maximum flexibility during nighttime operations. Non-flammable and non-toxic; it will not start a fire like a pyrotechnic trip flare. Ideal for nighttime intrusion spotting for any security observation post. The surface trip flare is reusable; just insert a new chemlight and it's ready to use again. An ultra-high-intensity lightstick is recommended for use with this unit. Each surface trip flare includes one ultra high-intensity ChemLight, trip cord, and mounting hardware for any surface.