The Loctite® 7700 Hand-held LED Light Source is a UV/Visible light emitting hand-held light source. This system offers a high powered, portable light source capable of consistently curing many light cure products that respond to UV/Visible light. Click here for Adhesive Selector Guide. Due to its unique LED technology, the Loctite 7700 Hand-held LED Light Source can provide instant on/off performance and consistent light output. Due to the focused nature of the system's spectral output, IR output is drastically reduced, so heating of assemblies is virtually eliminated. The focused nature of the system's spectral output also minimizes the amount of ultraviolet energy that the system irradiates, thus minimizing concerns about worker exposure to ultraviolet light.