Abstract: A visualization device is described. The visualization device includes a body, one or more activating lights sources and one or more infrared light sources. The body is configured to receive one or more power sources. One or more infrared light sources are configured to determine temperature. The one or more activating light sources may be positioned at or proximate an end of the bode that is substantially opposite to the infrared light source and are configured to produce activating light. The activating light sources and the infrared light sources are separately or jointly coupled to one or more power sources. Methods of detecting leaks using the visualization device are also described.