The e3 Essential Plus™ 4MP Access Control with Power Distribution is an entry level 4 door access control system upgradeable to our Elite series using our quick and easy License-To-Go upgrades. Our embedded browser-based network appliance makes advanced security technology reliable and affordable for entry-level access control applications. With tens of thousands of access control systems deployed in the field, and backed by decades of experience, Linear continues to deliver unprecedented value and innovation. This full-featured, self-contained hardware/software access systems is perfect for commercial, industrial, banking, medical, retail, hospitality, and other businesses where users need to secure their facilities, manage access of personnel, create and analyze reports, and monitor the system remotely from any web browser. The comprehensive wizard is fast and intuitive, saving significant set-up time. The Essential Plus can be seamlessly scaled up, via software keys, to other E3-Series systems providing increased door and reader capacity, enhanced features, and higher level capabilities. The E3-Series makes expansion easy ad sets new standards of excellence for reliability, ease-of-use, expandability, best-in class value and lowest cost of ownership.