Tracer Products offers the Tracerline OPTIMAX 400 cordless, true UV LED leak detection flashlight. It emits less visible light so leaks are clearer and easier to spot, and features a high-output UV LED that causes dyes to fluoresce more brilliantly and with greater contrast than with conventional inspection lamps. It works with all Fluoro-Lite universal/ester and PAG A/C dyes, as well as Dye-Lite TP-3400 and TP-3900 series fluid dyes. Its inspection range is up to 10' (3m) or more, and the lamp body is corrosion-resistant, anodized aluminum. Powered by standard AAA batteries (included), the unit has a 30,000-hour LED service life.