The Best EZ Series Keypad Lock has a heavy-duty mechanical platform designed and manufactured for the toughest applications. The key override feature allows for mechanical access. 12 position keypad design with audible and visual feedback. Standard 4-cell battery holder, each with AA alkaline batteries that are easily changed. Weather-resistant for versatile applications, including doors exposed to inclement weather. Variable PIN length from 3-6 digits. Passage Mode priviledge, authorized users can unlock device for extended periods of time. Provides for one administrator PIN and five supervisor PINs to alow easy management of groups of users.