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  2. Honeywell T87 - Wikipedia

    en.wikipedia.org/wiki/Honeywell_T87

    The Honeywell T87 Round Thermostat is a thermostat that Honeywell International, Inc. first manufactured in 1953. [1]

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  4. Thermal cutoff - Wikipedia

    en.wikipedia.org/wiki/Thermal_cutoff

    Flashing incandescent Christmas lights take advantage of this effect. Some flasher bulbs interrupt power when heated, while other twinkle/sparkle mini-bulbs momentarily shunt current around the filament. Thermal switches are part of the normal operation of older fluorescent light fixtures, where they are the major part of the starter module.

  5. Honeywell - Wikipedia

    en.wikipedia.org/wiki/Honeywell

    Honeywell was a component of the Dow Jones Industrial Average index from 1999 to 2008. Prior to 1999, its corporate predecessors were included dating back to 1925, including early entrants in the computing and thermostat industries. [7] [8] In 2020, Honeywell rejoined the Dow Jones Industrial Average index. [9]

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  7. Thermostat - Wikipedia

    en.wikipedia.org/wiki/Thermostat

    A digital thermostat Honeywell's "The Round" model T87 thermostat, one of which is in the collection of the Smithsonian. A touch screen thermostat An electronic thermostat in a retail store A thermostat is a regulating device component which senses the temperature of a physical system and performs actions so that the system's temperature is ...

  8. Smart grid - Wikipedia

    en.wikipedia.org/wiki/Smart_grid

    A dynamic system apportions the energy provided by the solar panels and stored in the battery and hot water heaters to the system of 23 houses. The smart grid software dynamically updates energy supply and demand in 5 minute intervals, deciding whether to pull energy from the battery or from the panels and when to store it in the hot water heaters.

  9. Automotive air conditioning - Wikipedia

    en.wikipedia.org/wiki/Automotive_air_conditioning

    The refrigerant was developed by the DuPont/Honeywell company and is more expensive per pound than R-134a. R-1234yf can be found in late-model cars and is not cross-compatible with older R-134a or R-12 systems. Of the three refrigerants, R-1234yf is the best for the environment with the lowest global warming potential number which is about a three.