Battery Holders and Mounts: Type - Battery Holder; Battery Style - Coin Cell; Number of Cells - 1; Battery Diameter - 0.985" (24.0 mm); Contact Type - Spring Steel; Contact Material - Steel, Tin Nickel Plate; Mounting - Thru Hole, Surface; Base Material - PBT; Temperature Rating - 50 to 145 deg C (-60 to 293 deg F); Flammability Rating - 94V-0; Dimensions - 1.219 x 1.093 x 0.312" (30.9 x 27.7 x 7.9 mm); Generic Reference - CR2450, DL2450