42 Using Your ProjectorInstalling the Interactive Pen BatteriesNOTE: Remove the batteries from the interactive pen when not in use for a longtime.1 Press the tab to lift the battery slot cover.2 Check the polarity (+/-) marking on the batteries.NOTE: Recommend to use two AA 1.5V alkaline batteriesfor longer battery life. The life duration may be variedfrom different brands/manufacturers of alkaline battery.3 Insert the batteries according to the polarity marking inthe battery slot.NOTE: Avoid mixing different types of batteries or usingnew and old batteries together.4 Slip the battery slot cover back.
