Weather sensor manufacturer Lufft has announced the launch of its new stationary street weather sensors.The StaRWIS, which is installed at a measuring distance of 5.5 meters above the road, is based LED technology which  is already used with the MARWIS mobile sensor.The company says the hardware is easy to install and based on a non-invasive, spectroscopic measuring principle.  It says the sensor is particularly suitable for hard-to-reach or critical locations, which make installation on the ground difficult or impossible. This includes, for example, bridges or city streets.Lufft says StaRWIS provides values for road temperature, dew point temperature, water film height, road conditions (dry, wet, ice, snow, critical and chemically wet), relative humidity, the percentage of ice and friction. In November 2017, a firmware update will expand the capabilities to include the freezing point temperature and dew point density.