A chandelier lift is a system for raising and lowering a chandelier using retractable cable. These systems are useful because they give you access to your chandelier without resorting to cleaning services or potentially unstable ladders to reach and clean the top of the chandelier for cleaning or bulb changes.
Many chandelier lifts are completely hidden by the ceiling so that only the cable holding the chandelier is visible. This helps to maintain the look of the room without having a distracting motor attached to the ceiling. You can order chandelier lifts online, and they often contain switches or keys that allow you to raise and lower the chandelier to the desired height.