The Gardner ATTS IW Underlit Alarm is the illuminated wheel roller version of Gardner's ATTS range. It is supplied with a clear two-magnet roller wheel and is compatible with deluxe and original V2ATTx receivers. The alarm comes with a full one-year ATT warranty. - IW = Illuminated wheel roller - Supplied with a clear 2 magnet roller wheel - Compatible with deluxe and original V2ATTx receivers - Full 1 Year ATT Warranty