The Exo Terra Glow Light Gives You The Versatility Of Placing Heat And/Or Light Sources On Your Terrarium Where Needed. The Device Is Sturdily Constructed With A Metal Reflector, Heat Resistant Ceramic Socket And A Spring-Loaded Swivel Clamp. It Can Be Easily Turned Off And On By The Switch, Mounted On The Extra Long Power Cord. The Inside Of The Reflector Is Coated With A Highly Reflective Luminous Coating That Continues To Glow Long After The Lamp Is Turned Off. This Allows Diurnal Reptiles And Amphibians To Retreat In Their Night Burrow Or Hiding Without Stress. A Moon-Like Glow Enables Nocturnal Reptiles And Amphibians To See Properly Without Disturbing Their Night Cycle. It Is Also Ideal To Monitor Your Animals During Night Time With Out Switching On The Lights Which Can Cause Stress And Disorientation. Prevents Stress. Instructions: 1.Screw Light Bulb Into The Exo Terra Glow Light Clamp Lamp (Follow Maximum Wattage Guidelines). 2.Attach The Clamp Bracket To The Lamp Socket, Wide Part Of The Bracket Goes Around The Socket 3.Insert The Narrow, Rounded End Of The Clamp Between Narrow Part Of The Bracket And Tighten The Screw Until The Clamp Is Firmly Secured 4.Attach The Lamp To The Top Rim Portion Of Your Terrarium 5.Keep Unit Out Of Reach Of Children. Keep Unit Away From Curtains Or Other Flammable Objects. Please Refer User Manual For Further Information