The thing in the middle surely looks like a IR diode, with a metal/magnet ring around it. But I haven’t been able to find any info on this thing. Was wondering if anyone recognizes it, and knows how to get data out of it?
The meter maybe supports Mode D of the IEC 62056-21:2002 standard (but no guarantee). It transmits data every 20-30 seconds at a baud rate of either 2400 or 9600 bps
I will give it a shot