... ) L:-55 - 150 'Cwork way: continuousPotential lead: three wire / two wireMaterial: Aluminum alloy , the surface with waterproof, prevent ... wind direction sensors is construction machinery, railroads, ports, docks, power plant, weather, the cableway, environment, greenhouse, breeding, etc ... output corresponding signal.wind-direction sensors is by two parts of wind-direction sensors and cable If ...