Pair Repro ICELERT Decals for Federal Spec Rover P6 The "Icelert" was a sensor which warned the driver of falling outside temperatures and the possibility of ice forming on the road on US spec Rover P6's and possibly some other BL models of that era. Listing is for two decals which stick inside the glass with the design showing outwards as original. Colour is close to the sample I was provided with, but not an exact match. Still if yours are missing or cracked and yellowed, these still provide a nice alternative.