(Lorex) Allows digital camera transmission from a metal building. Mount the directional antenna outside of the metal building, facing it toward the direction of the receiver. Antenna cable is connected in place of wireless antenna at back of camera. If transmitting to another metal building, you will need a second directional antenna to connect to the receiver. Directional antennas can also be used to boost transmission signal to and
from wood buildings, giving greater distance and range through obstacles. Using a directional antenna at the camera can give a transmission range of up to 500 feet. Using a 2nd Directional antenna at the receiver can give a transmission range of up to 1000'. Includes 20' cable.