Vandal Resistant Keypad Number of Keys 4 IP Rating IP65 Interface USB Height 4-21/32 In. Width 1-43/64 In. Depth 7/16 In. Cutout Height 13/32 In. Cutout Width 15/16 In. Operating Temp Range -40 Degrees to 100 Degrees C Case Material Die Cast Zinc Key Top Material Die Cast Zinc Key Layout Function Features Metal Keytops and Casing Keys with Permanent High Contrast Engraved Keytop Graphics Compatible with Storm 450i USB Encoder Standards CE Includes Gasket