I have three 841's, 2 are pet cams and 1 is wired; the 2 wireless have a dedicated Asus RT-N66U wireless router set to AP mode (DHCP server disabled, LAN assigned a unique static IP) and are pretty darned steady, nothing else is on that wireless. The signal goes around a corner then about 50 feet and through a window to one, through a window and about 20 ft. to the other, house is solid brick. I imagine it'll make it though the floor relatively easy.