"Purchased new lorex lmu3724 series, didnt work from day 1 from the box, could not get the cameras to pair with receiver, had 2 friends who currently have nest units installed to try, they couldnt get them to pair either, the cameras were litterally 3 feet from receiver, called tech support no help there, we tried factory default, still no luck, they advised poor receiver, going to replace, i purchased a no name wifi camera no problem in connecting to router,,paid $50. for camera, paid $600 for a box of crap. waiting for new receiver and will see if this works, if not its all going back. would highly look at other companies before lorex."