This light pencil is an invaluable aid in the search for leaks e.g. in air-conditioning and cooling systems. However, the set has a much wider range of applications – wherever a contrast agent and UV rays can be used for media leak diagnostics. An invisible leak can often be found when an agent is added to system filling. The leaking contrast agent will light up with a bright luminescent colour (usually yellow) when hit by UV rays and the point of defect can be precisely located. Thanks to its shape, the lamp can be used flexibly as a source of UV light e.g. in the detection of protective elements in banknotes, products, etc. Includes a pencil-shaped lamp, flexible 300mm attachment, optic cable attachment and magnetic holder. Power supply 4.5 V (3 × AAA), packed in a blister.