ZOLL CPR Stat Padz HVP Multi-Function electrodes work with ZOLL AED Plus and ZOLL Pro devices. They provide reliable support for defibrillation, pacing, cardioversion, and ECG monitoring. The pads use Real CPR Help technology. They have sensors for compression depth and rate, which help rescuers during CPR. The advanced HVP gel reduces skin irritation. Its two-piece design allows for anterior/posterior and anterior/anterior placement options. These adult electrode pads also provide a standby life of up to two years for long-term readiness.