Lintratek Universal Dual Band Cell Phone Signal Booster Wireless Kit for Home and Office WHY CHOOSE LINTRATEK: Excellent Quality Exquisite appearance High Technology Considerate service Cell phone becomes especially helpful when people get into critical situations. In case of emergency a timely call can save somebody's life. Unfortunately, there are still some places where they can find themselves "out of coverage",no signal at all... Usually those places are either too far from the cell phone base station or located inside underground constructions, for example: Parking lots, tunnels Big stores, office buildings Cars, boats House in remote areas