Access Control Keypad Case Material High Impact Polymer Series AXS StrikeMaster Height 4 43/64 in Width 3 59/64 in Depth 1 45/64 in Number of Keys 12 Timed Entry Allowance 1 to 98 sec Power Required 11/28V DC or 9/20V AC Operating Temp Range -4 Degrees to 158 Degrees F Max User Codes 50 Standards EMC-CE EN55022 Class B EN55024 EN60950 EU Low Voltage Directive EU RoHS FCC Part 15B Class B WEEE Weather Resistant Yes For Use With Any Electrically Operated Strike or Lock