I believe the version that Amazon sells is Zigbee, not Z-Wave. At least that is what others here in the forum have mentioned, and that is what reviewers on Amazon.com have stated. Since these are designed to work in the Amazon ecosystem, which only supports Zigbee to my knowledge, I am hoping that they are in fact Zigbee. I ordered a few to try out.
Here is the thread where these Kwikset locks are discussed.
