Replacement Remote Controller for Dell Projector Feature: Easy and full access to all the buttons Faster shipping and excellent service! No need any program, only put into new battery can work well. Working for the below models: 1609WX 1209S 1610HD EP771 1210S 1410X 1510X 1610X Power Supply: 2X 1.5V AAA Alkaline Battery Package Content:1 x Remote Control