AL-IME2-PIE Expander, is simply plugged into a standard AC outlet, and can extend the Gen.2 Gateway coverage area by approximately 100'.Typically introduced into the network when a Gateway does not provide sufficient signal strength to a particular area, it is designed to extend coverage and thus facilitate communications with a Wireless lock or a group of Wireless locks. The AL-IME2-PIE Expander must be used with a Generation 2-AL-IME2 Series Gateway, but can be intermixed in an existing system that includes older "non-version 2" Gateways. However, at least one Version 2-Gateway must powered and online before an AL-IME2-PIE Expander will function within the network.AL-IME2-PIE Expanders simply plug into an AC outlet and offer the most cost-Effective equipment- and labor-Costs. ( Versus conventional Gateways and Expanders, AL-IME2-EXP). They also provide a simplified "Plug and Play" setup, where the Networx system automatically identifies all newly-powered Expanders and quickly self-Determines the best Wireless signal pathways. Up to 7 Expanders can be added to support one Generation 2-Series Gateway. Each Gen. 2-Gateway and a maximum of seven Expanders can be addressed as one group.There are a total of 99 addressable groups supported.