The Welch Allyn AED 20 is rugged and flexible. The unit demonstrates the latest advances in defibrillation technology and is designed to accomodate both basic and advanced life support personnel. Simple 1-2-3 operation, audible and visual prompts and a large high-resolution display makes this unit easy to use. The Welch Allyn AED 20's automatic analysis, joule selection and charging make administering life-saving therapy easy. The most innovative addition to this new AED is its manual override and data exchange capabilities. When trained trained medical personnel arrive, they can override the AED and manually deliver full energy defibrillation shocks. Later, the data from the Welch Allyn AED 20 can be transferred to the company's family of PICs via a datacard.