The Exo Terra's Full Moon was created to simulate natural moonlight in your terrarium. The Full Moon mimics a moonlight shimmer that enables you to observe your animals at night without disturbing their natural behavior. It provides crepuscular and nocturnal animals with a dim moonlight which allows them to navigate in their territory in search of insects, mating-partners, etc... In total darkness these animals would be completely disoriented. Equipped with a light-sensor, the Full Moon automatically lights up after the terrarium lights are switched off. The Full Moon's surface is littered with craters in order to give it a realistic moon-like appearance. The low heat emission of the Full Moon allows a natural night-time temperature drop inside the terrarium. The Full Moon is easy to install, on the inside of the terrarium's screen cover, and held in place by a strong magnet. Key Features : Simulates natural moonlight Realistic Moon-like appearance Ideal for crepuscular and nocturnal animals Great for nightly observation Lights up automatically when it gets dark Low energy consumption 1W