Concerning the lamp(s) inside this product and spare part lamps sold separately:
These lamps are intended to withstand extreme physical conditions in household appliances, such as temperature, vibration, humidity, or are intended to signal information about the operational status of the appliance. They are not intended to be used in other applications and are not suitable for household room illumination.
Is lime scale building up within your dishwasher even though it has a build in water softener? This could mean that the regenerator doser is no longer functioning as it should. If it is broken, this replacement comes complete with ring nut and gasket.