Training for the Philips FRx AED made simple. Intended for use wit the Philips Training pads II, these replacement electrodes can be used with the HeartStart FRx or the HeartStart FRx Trainer on a Manikin connected with an external Manikin adapter. Simply plug the Training pads II in to activate the FRx defibrillator's training mode and suspend the defibrillator's ability to deliver a shock. Note: The Philips Replacement Training pads II package contains only the pads with integrated wire and plug.