Illuminated Keypad Number of Keys 16 IP Rating IP65 Interface USB Height 3-25/32 In. Width 3-25/32 In. Depth 15/32 In. Cutout Height 13/32 In. Cutout Width 1-3/16 In. Operating Temp Range -20 Degrees to 60 Degrees C Case Material Polymer Key Top Material Polymer Key Layout Custom Features Water Resistant Industrial Grade Polymer Tactile Keys with Snap-On Keycaps Integral White Light LED Illumination Compatible with The Storm 450i USB Encoder Standards CE RoHS WEEE