Quick video on how to change the batteries.
When Honeywell Rondostat HR 20 runs out of power. Then it´s obviously necessary to change the two AA 1,5volt batteries. The thermostat recalls all programmed settings, other than the date and time. So when the new batteries are in place, Clock and date need to be set again.
My PlayHouse is a channel where i will show, what i am working on. I have this house, it is 168 Square Meters / 1808.3ft² and it is full, of half-finished projects.
I love working with heating, insulation, Servers, computers, Datacenter, green power, alternative energy, solar, wind and more. It all costs, but I'm trying to get the most out of my money, and my time.