National Geographic 331NC Weather Station with Color Screen, item IK-636215, can transmit through walls, depending upon the thickness and composition. The sensors utilize a line-of-sight low-power FM type signal. Unobstructed, they can transmit well over 100 feet, but obstructions to the signal will reduce the signal strength that gets through.
answered 3 years, 6 months ago
4out of 4found this answer helpful.