Illuminated Keypad Number of Keys 12 IP Rating IP65 Interface USB Height 3-25/32 In. Width 2-3/4 In. Depth 15/32 In. Cutout Height 13/32 In. Cutout Width 1-3/16 In. Operating Temp Range -4 Degrees to 140 Degrees F 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