I have a sanyo air conditioner sap-krv186eh. In the wiring diagram, there is a 4 pin home automation connector. Maybe it is for 5V,Gnd, Rx and Tx. I could not find any documentation. Any idea what it is? It seems that “JEMA HA terminal” is some standard thing!? It is explained here: JEMA端子HA端子JEM1427端子
and here
家庭用エアコンに付いてたJEM-A HA端子をHomeKitから使う | DIY Smart Matter
(Sanyo is now Panasonic and these devices are no longer produced. IR commands do not work since IR protocol is encrypted)
