I am using it to build a low volume product. I've tried to use several from other manufacturers, RFDuino, Simblee, Redbear. None of them were good enough for several reasons. They are small, unreliable companies, their offerings were either not suitable or expensive. Even though this is made just by one person, it is designed for the common use case. It is apparently more reliable source because there is a long enough track of delivery. Pros: - Correctly designed, suits the most common use case. - Reasonably priced. - Certified - The maker can even do the assembly, conformal coating etc. for your custom board. Cons: - Little to big. I would have considered providing one version w/o though holes. The nano version is not yet certified, per blog expected to be on Q3 2018 and is also $2 more expensive.
Response from I-SYST | July 3, 2018
Thanks very much for the review. The Nano version passed FCC & CE certification testing already. We are in the process of completing the paperworks. The Nano is also designed for easy integration. All the pads are at the edge of the module for easy hand assembly during prototyping phase as well as mass production.