Noah Systems PL Series, Руководство по эксплуатации продукта

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10 - 15 in (254 - 381 mm). The 410nm wavelength is useful for general search
at up to 5 - 8 ft (1.5 - 2.4 m), the 445nm wavelength is useful for general
search at up to 5 - 15 ft (1.5 - 4.6 m), or pattern photos at up to 30 ft (9 m)
with fluorescent reactant aid.
For PL-445-520: The typical usage range to the surface being investigated is
10 - 15 in (254 - 381 mm). The 520nm wavelength is useful for general search
at up to 5 - 8 ft (1.5 - 2.4 m), the 445nm wavelength is useful for general
search at up to 5 - 15 ft (1.5 - 4.6 m), or pattern photos at up to 30 ft (9 m)
with fluorescent reactant aid.