The remote requires two AAA batteries (supplied), and the keyboard requires two AA batteries (supplied). Alkaline batteries are recommended. To install the batteries for your remote 1. On the back of the remote, remove the battery cover by loosening the small screw in the center of the panel ( fig. 3). Keep the attached washer with the screw. 2. Install two AAA batteries, ensuring that the polarity (+ and –) on the batteries matches the + and – markings in the battery compartment. 3. Reattach th