Different levels of warning protection with 3-way switching options: Steady Burn, Flashing, and Off. Ambient photocell with a timed delay that reacts to light in the environment. Replacement barricade lights. -Reinforce plastic with UV coated -Meets I.T.E. specifications, all MUTCD and is NCHRP-350 approved -Attaches to all barricades -Efficient circuitry provides trouble free operation with 1 or 2 standard 6V Lantern batteries