G - Physics – 08 – B
Patent
G - Physics
08
B
340/128, 342/15
G08B 19/00 (2006.01) F24F 11/00 (2006.01) F24F 11/02 (2006.01) G05D 23/19 (2006.01)
Patent
CA 1061880
ABSTRACT OF THE DISCLOSURE Disclosed is a simple apparatus for turning off a heating or air conditioning unit when a door or window is opened. Switches activated by the opening of doors or windows control the operation of a heater or air conditioner through a relay system that double as a burglar alarm when an alarm circuit is activated.
232811
Hedly Sven
Winhammar Lars
Hedly Sven
Winhammar Lars
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