Congratulation!By the way, all of Korean (South) houses were equipped with floor heating system since the old days.The old Korean floor heating system had a wood furnace in the kitchen for cooking/heating and the hot smoke would go up the chimney through channels under the floor.Nowadays, hot water, produced by a city gas running gas boiler (a circulation pump inside) is used as a medium. The boiler is controlled by electronically a indoor controller/thermostat and the boiler supplys hot water either for utility hot water in saparate circuit. The each room could be equipped with saparate electronic thermostat controller as an option.
I have made one but some altered, the terminal arrangement, spacing 19mm because I could use the fixed width twin terminals with it.I don't know why the photo is up side down.
Machine Sewing Class
Because of limited space of 9V battery shell it possible just 2 batteries but the capacity would be much bigger than regular ones.
Lazy Boy's RF Switch BoxView Instructable »
Cafe Racer Gas Tank
OscilloPhone: Use your Smartphone as an Oscilloscope / Signal Generator