This package of products are designed for elderly. It includes four products: wireless alarm (provides a handy key for elderly to call for help when they fell ill), human body sensor (it detects human body's action to estimate whether a man has fallen over or in coma), heart rate monitor band (it collects user's physical data during sleep to estimate their health status) and sleep monitor (it djusting indoor environment automatically to make it more comfortable for the elderly during sleep).