DSD Tech products are warranted and have technical support. You will most likely get a better product than the cheapest unit you can on ebay or Alibaba.
https://www.amazon.com/DSD-TECH-HC-05-Pass-through-Communication/dp/B01G9KSAF6
DSD Tech products are warranted and have technical support. You will most likely get a better product than the cheapest unit you can on ebay or Alibaba.
https://www.amazon.com/DSD-TECH-HC-05-Pass-through-Communication/dp/B01G9KSAF6