Philips FR/FR2/FR2+ Adult Training Electrode Pads are designed to be used with the Philips HeartStart Trainer 2, the Philips HeartStart FR2 or FR2+ AED with Training and Administration Pack, or the older ForeRunner Training Unit. These Training Electrode Pads use a low tack adhesive which makes them reusable so they're economical to use for multiple training sessions. They're also perfect for use on almost any CPR manikin.