Leak detect:Mainly used for signal indication.Color, Red, yellow, blue, green Leak detect:Smoking time, 1-5 minutes. Light Way, HandColor, Red, yellow, blue, greenStorage temperature, -30°C~ +65°CValidity ,≥ 3years Our main products include: smoke oil, smoke machine, smoke sprayer, magican smoke spray, M18 color smoke for fire drill exercise, periscope and camera pen etc.. After years of ...