The SDK is no longer available for purchase. You can download v1.3 or higher and use it for free as long as you use a ControlThink ThinkStick.
Thank you.
Please where can I download the z-wave sdk?
I don't yet have the controlThink ThinkStick but I plan on purchasing it as soon as I have the sdk.
I'm new to the z-wave world.
http://forums.controlthink.com/t/2051.aspx
If you purchased it before they stopped selling license keys and have a key, you can use the devices listed. If you do not have a key, you MUST use a ThinkStick.
It still supports all Z-Wave devices, you just have to use it with their stick. Since they are now giving it away for FREE, they have the right to put resctrictions on it.