The question to me is: are they actually good? I've bought into the Z-Wave ecosystem, and by and large all the Z-Wave door/window sensors available on Amazon have bad reviews. They have issues maintaining a connection to the network, they drop events, have terrible battery life, etc. The Zigbee sensors on Amazon seem a bit better, but still.
I'd seriously consider getting a Zigbee USB stick if I knew these function well and have good battery life. I just bought several $40 Z-Wave door/window sensors that got decent reviews, but at 4x the $10 IKEA price, I'm not going to be buying many of them.
I'd seriously consider getting a Zigbee USB stick if I knew these function well and have good battery life. I just bought several $40 Z-Wave door/window sensors that got decent reviews, but at 4x the $10 IKEA price, I'm not going to be buying many of them.