... reliable. The main technical parmeters:Signal output: current signal , pulse signal , voltage signal, RS485/232 signalSignal output way : ... 150 'Cworking way: continuouslyPotential lead :three wire or two wireMaterial : Aluminum alloy,the surface with waterproof, prevent ... heating, prevent freezing. FC-5SX wind speed and direction sensor is construction machinery, railroads, ports, docks, power ...