The TamperProof? Safety Auto-Reset Monitor is ideally placed at the bedside and then connected to the Corded Weight-Sensing Bed Pad to alert the caregiver when an individual gets up and weight is removed from the bed pad. When the resident gets up and weight is removed from the bed pad, the monitor will sound alerting the caregiver. If the weight is re-applied to the bed pad, the monitor will automatically reset. This system is perfect for facilities. Optional AC Power Adapter (AC-05). Battery Operated (3-AA, Not Included).