When I looked at the indoor sensor the MAC ID looked like 48:3F:DA:A7:25:75, and I registered it, Somehow it has worked for the past two or three years, then in WINDOWS 11 with a new laptop, it disappeared sometime in the past few months. My outdoor sensor works just fine, but indoor would not connect or register. When I put in the correct MAC ID looks like 4B:3F:DA:A7:25:75, it failed, change the 8 to a B and it connects with my IPhone (not with Windoz) appears on the map, then disappears.
Ive tried pretending it a new device, registering, but PurpleAir won’t recognize any other email or the correct MAC address. I tired a different email id, but that too failed. This is the WRONG MAC Addr
Works fine, turns the color of the air correctly, but we can’t see it on the map when we’re away. We use indoor vs outdoor air to decide when it’s safe to come home in smokey california.