Telemergency Alert Device Automatically contacts 911 (optional) and up to 5 additional phone numbers of your choice for emergencies includes easy-to-use wireless pendant * One simple press of the button (or remote help pendant or unit) alerts where you are and what kind of emergency you might have * Will work up to 30 hours during a power shortage with backup 9 volt battery * Customer service support through toll-free number device will acknowledge tones * Visually impairement features include: large concave buttons and different sized buttons * No monthly fees Shipping Carton Size: 12 L x 10 W x 6 H * Range up to: 100 feet