GE Light Dimmers?

Hi - can i use a GE Dimmer # 14294 or Linear WD500Z-1 Z-Wave - with a Concord 4? The Lutron Casetas are to expensive for me.

Yes, you should be fine with most Z-wave light switches and dimmers as long as you have an module which supports Z-wave. Given their relative simplicity there are usually few compatibility concerns with Z-wave switches and dimmers.