Ye I know that its a sensor was just wonderin wot the make up of the actual loft sensor was? I am on Tauris but would imagine they all similar? Do you think that the loft sensors are open to corrosion? I thought that they would have been waxed? Dont know if waxing would impare sensitivity of pad or even the waxing breaking down would cause probs? There was a post on another site for a unikon pad where two pads went faulty at same time after both been in a trap for four years!!!