Hi~this interface is a standard DB9.You can find it in any Electronic components market.Thanks

Hi Denys~ Sorry to tell you that this product is made by the third company, we do not know what chip they use.

Hi there~ Unfortunatelly, we do not have the pinout map.But normally,the DB9 pinout of RS232 is the same, you can refer to here ### https://www.lammertbies.nl/comm/cable/RS-232.html ###Regards

Hi there, please check if rs232 shield works for you. **https://www.seeedstudio.com/RS232-Shield-p-1910.html** thanks.

Thanks. I was hoping you had a different product that might.

you could use a male to male db9 cable which can be seached in Amazon or Ebay.Thanks

Hi frank~ Thanks for your comment.We really appriciate it.We will let the research team know.Regards

Hi,you can check it here. https://baike.baidu.com/item/TTL%E6%8E%A5%E5%8F%A3/6164068?fr=aladdin