Call Safe System. This is the Personal Safety Alert System that lets users pre-program up to 5 telephone numbers to call in case of an emergency.  Call Safe’s greatest benefit, compared to similar systems on the market, is that it does not require a subscription to an emergency response service.  It mainly relies on friends and family to respond to the emergency call. The Call Safe Personal Alert System consists of two units:  the Control Hub and a water-resistant Panic Pendant.