How ap9620 works any information
You will find the User's Manual for the AP9620 at this link https://www.apc.com/shop/us/en/products/Legacy-Communications-SmartSlot-Card/P-AP9620
If you are looking for information on using UPSlink protocol I have attached a copy.
NOTE: Downloading the UPSlink documentation provided indicates you agree with the attached license agreement.
Kindly also tell me how i connect my srt ups bs serial or how i connect my srt ups in hyper terminal or teraterm
Connection instructions are available in the firmware update instruction guide. https://download.schneider-electric.com/files?p_File_Name=LFLG-A4YG52_R1_EN.pdf&p_Doc_Ref=SPD_LFLG-A4YG52_EN
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