We offer you Free Samples, and you must give us feedback on the sample by the way of product application articles with pictures or videos.

Do as follow:
Go to the product you want, order and pay.
After you operate the product, write down the procedure including pictures. For example, firstly write about what do you want the product applies to, secondly how to connect the product to your device, finally how does the product work. The article words should be 500 or more; pictures be 5 or more.
Or shoot operation process video. Length of video should be 2 minutes or more.
Send it to us. Our email address is sales@ourautomation.com.
We return you the money paid for the product (shipping freight NOT included). The amount would not be over US $50.00.

Article example by customer please visit http://www.ourautomation.com/blog/install-and-operate-4-lights-and-2-fans-with-a-6-channel-remote-control-switch/