Product Updates – Copper Board, RF Wireless Module on 433&315 MhzChao
There are two products are updated and more options to choose:
The copper board was only in single side and now you can get double side. This double side version enable you to make double side DIY PCB of course， developing two sides one by one, drill once, and inch them together. Not too much more work than single side board. You can buy it here.
The RF wireless module has both 433 and 315 mhz version now, these different frequency band allow you to use them based on different background environment, medical, industrial, etc. These are worldwide ISM band setting, see more on wiki page. And also many common application use these commercially-available band: 433.92MHz, 315MHz, 868MHz and 915MHz. See this product here.