Our R510 AP works great indoors. However, the signal only extends about 8 feet outside of our hurricane glass sliding doors. The total distance from the R510 to the sliding glass doors is only 22 feet, so this gives a range of only 30 feet. Is there a signal booster that could be plugged in outside or is another wired AP required? If so, what signal booster or AP is recommended? There is a covered area outside, so it is protected from the elements with ambient temperatures ranging from 40-95 degrees F.