Adds Safety And Security Throughout Your Home. Automatic Dusk To Dawn Function. They Turn On When It Gets Dark And They Turn Off When It Gets Light. These Guide Lights Use Energy Saving LED Lamps Which Cost Pennies Per Year To Operate. LED Lamps Last Over 100,000 Hours. No Bulbs To Ever Replace. Rotates 360 Degrees To Direct The Light. These Are "Good For The Environment Product." They Carry The Good Housekeeping Seal And They Are UL Listed.