Wilson Electronics Ag Pro 70 Home Cellular Signal Booster Kit - Retail Packaging - Black (Discontinued by Manufacturer) Significantly Boosts Cellular Signal Strength For Both Voice & 3g Data Inside Home No Physical Connection To A Cellular Phone Or Cellular Data Device Is Needed Amplifies Signals Both To & From The Cellular Tower Maximum Power Allowed By The Fcc For A Consumer-grade Cellular Signal Booster Works On All Generations Of Cdma & Gsm (3g)