This gas meter has a optical port, but according to the manual it is locked until you start using it (or it might be locked by the supplier). I put the frient on it, and it sees 0.3kwh, and then it just stays stable, which doesn’t seem right to me. So i’m getting something, but not sure. If i remove the frient i don’t see any red light, but this maybe because of the aforementioned lock and it won’t enable until you put the read head on there.
I didn’t mess with the pulse settings, seems 1000 is right for the gas meter.