You have to reach the one you've acquired the product from because he can also give you instructions on how to properly program the device and what applications you need. I am recommending this because I couldn't find a website with the necessary instructions. I've used various searching engines, and the results were always the same. The product appears on some websites that are in another language, but without clear instructions on how to proceed further and what app do I need to program the SPACESAT SS-3002 device.