The Laerdal-150-15000 RA Sim (LinkBox Old) AED-Link Skin Upgrade with ShockLink is a comprehensive upgrade kit that enhances the realism of AED and CPR training. Designed for use with Laerdal manikins, this system connects the AED trainer to the manikin, allowing realistic shock delivery and performance feedback. The included ShockLink and AED-Link Skin offer a seamless integration for effective, hands-on resuscitation training.