JLG Parts Silicone Button Keypad for use on JLG Vertical Mast Machines. This key pad sits at the top of the 1600323 Controller and is used to label the functions on of the controller such as speed, drive, lift, and battery life. Model Usage: 15DVL, 15DVSP, 20DVL, 20DVSP. Please ensure proper model and serial range before parts purchase.