Few notes: please ignore the ALARMING temperature readout. It can do C and F. But there is no probe attached. All it can accurately do right now is barometric pressure, time, and date. Opening the back of the display panel was fascinating. It was apparently serviced on 13th of May, 1993 by Heathkit. Silkscreen on PCB says 1978 which seems accurate for the kit. They stopped selling kits in 1992, but apparently carried on servicing kits for a while longer. Just a fun observation in the midst of my personal chaos.