The Lift is a block that teleports a player along the y axis of a dimension when given power. After the lift has been placed and given power, it will activate, and a harmless green laser will appear below it. Any player who steps into the laser lift will be teleported onto the lift. This will only work if there is enough room above the lift to teleport the player (2 free blocks).
Sending a redstone signal to the lift will cause it to turn yellow, and changes the laser to blue. Stepping onto the lift will teleport to the highest block directly below it.