I have a ux21a and I have 4 cams set up. 2 are motion sensored and the other 2 are not yet. Im still trying this stuff out. I have a flood cam in the back parking area about 75 feet from my reciever and the other is only 15 feet from my reciever. I was wondering what is the recieving range for the vcr commander? Cuz My flood cam will not trip the vcr commander unless I use my remote to select that cam. Ive tried moving the vcr commander closer and the closest I can get it without it leaving my house is about 20 feet from the flood cam. Its set up right for the learned motion sensor. Is there a something I can do to boost the signal? And for some reason I can only get 1 sensor programed into my commander. Is there any way of programing more than one? If anyone knows anything Id appreciate it.