Ambient Weather WS-01TP Color Changing Wireless Aquarium Thermometer Night Light with Ambient Backlight The colorful WS-01TP night light featuring ambient backlighting is easy to read from any distance. Finally, an easy way to read your aquarium water temperature from both indoors and outdoors The bright LED backlight color changes with the indoor or aquarium temperature, providing instant Feedback on whether a room is too hot or too cold, or the aquarium temperature is properly Regulated Perfect for identifying hot and cold spots in your home or facility at a glance. Keep an eye on aquarium from any room in your house Plug into your AC wall outlet, and light your way with Ambient Weather Informative ambient back light displays The Intelligent night light consumers very little power, and features an electronic eye with auto Dim feature