Unihedron’s SQM-LU-DL Sky Quality Meter needs no computer connection. It records for 88 days at five-minute intervals using two AA batteries. A threshold feature collects data only after twilight.

BUT IMAGINE GETTING $1,000 BILLS EVERY MONTH. YEAH, THAT’S THE SHOCKING REALITY FOR SOME PEOPLE WHO THINK THEIR ELECTRIC METERS MIGHT BE TO BLAME. THEY SAY TRYING TO GET A METER REPLACED HAS ...