from outside, yeah kind of, but I wouldn't say impossible to read,also when the technicians come we let them in
It's electronic and has a display, although I can't read it right now cause I'm 3000km away, I can send my parents tomorrow if you think that any info there could be useful
since an electrician came to our house to change the fuses because we were consuming way too much (in hindsight this doesn't really add up, maybe he did something with the wires?) I'd say around 2 or 3 years now
You'd think so too when my neighbors are paying orders of magnitude more