Passive Road Sensor IRS31Pro-UMB is flush-mounted in the road. The two-part housing design allows the combined sensor/electronics unit to be removed for maintenance or calibration at any time.
The following variables are recorded: road surface temperature, water film height up to 4 mm, freezing temperature for different de-icing materials (NaCl, MgCl, CaCl), road condition (dry/damp/wet/ice or snow/residual salt/freezing rain), friction (grip), ice percentage.
