Hmmm... I wasn't aware that Lowe's had discontinued these. I wonder if it has anything to do with Keen's price increase. I think I paid $79.99 each for the ones I have and I noticed that if you go to Keen's web site they are now selling for $109.99.
Anyway, I have seven of these and they work great if you can keep them connected. Even though they are a zigbee device they seem to have an issue staying connected to the Iris hub. Whenever one falls offline I just pull the battery pack out and put it back in and it reconnects. I haven't spent anytime trouble shooting these so I don't know if removing and re-pairing them would help or not. I do know that when they were initially paired they were within 5' of the hub.