seontel Mobile Signal Booster/Amplifier/Repeater 3g/2100 MHz. Single Band. Best for Calling. Complete Kit Router Antenna Booster

Safety Information: Installation Guide: Check and find a place where your cell phone can receive the best signal outside your house, usually on the roof, or similar high places, then fix the outdoor antenna there, and the outdoor antenna should be pointing to the cell tower's direction. (The outdoor antenna should not be higher than the lightning rod on top of the building.) Fix the repeater device somewhere inside the house, the cell phone signal booster repeater should be fixed in a place where is near from the power socket, and have good ventilation. Runs the cable on the outdoor antenna into the house, and connect the antenna cable connector on the OUTDOOR port of the repeater tightly. Tightly connect the indoor panel antenna on the INDOOR port of the repeater. Turn on the power of the repeater.