Lamps semiconductor for light-signalling devices of circular and sectoral action (buoys, buoys) with calculated range of visibility 3-5 km with atmospheric transmittance coefficient = 0,84. Possible luminescence colours: red, yellow, green, white. Semiconductor lamps with built-in reflector in metal-plastic housing are intended for use as a light source in signal systems of river transport traffic control (replacement of incandescent lamps in existing types of light-signalling devices with cylindrical Fresnel lens 90 mm or 75 mm).
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