Spec Sheet Preview: The Alpha Communications® N3301/AL Keypad Module is designed to be a stand-alone access control keypad. It is used with the Nexa series Aluminum door panels and modules. The N3301/AL Keypad Module can handle up to 1,000 4,5, or 6 digit entry codes and features a backlit numeric keypad with stainless steel covered push buttons. Each N3301/AL can be powered by a separate 12vac power supply, or 18vdc to 24vdc power supply.