The Microflex Complete Wireless Push To Talk Digital Conference System combines a fully-featured discussion system with wireless freedom. Automatic Interference Detection and Avoidance technology delivers reliable RF transmission even in the most congested RF environments, and robust AES-128 encryption provides enhanced privacy. Each wireless push to talk subrental unit is powered by a smart Lithium-Ion rechargeable battery, and a single access point can control up to 125 wireless units without additional software or licenses.