Many Catholic Families will have a sick call set as they are used for anointing a sick family member or friend. When the sick call crucifix is not in use it can be hung on a wall as any other wall crucifix. The set is comprised of two parts, the top with the corpus and the base which holds the candles and the Holy Water vessel. The top part of the set is the front of the crucifix. This piece comes off the base and stands upright at the top of the base (please note that with most sets, the top will often stand at an angel). The bottom part of the set is the base. In the base are found two candles, one for each side of the base and a small vessel for Holy Water.
This article explains more on how to use the sick call crucifix set.