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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]

  3. Thermostat - Wikipedia

    en.wikipedia.org/wiki/Thermostat

    A thermostat exerts control by switching heating or cooling devices on or off, or by regulating the flow of a heat transfer fluid as needed, to maintain the correct temperature. A thermostat can often be the main control unit for a heating or cooling system, in applications ranging from ambient air control to automotive coolant control.

  4. 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]

  5. Mercury switch - Wikipedia

    en.wikipedia.org/wiki/Mercury_switch

    A metal ball and contact wires can directly replace it, but may require additional circuitry to eliminate switch bounce. Low-precision thermostats use a bimetal strip and a switch contact. Precision thermostats use a thermistor or silicon temperature sensor. Low-cost accelerometers replace the mercury tilt switch in precision applications.

  6. ecobee - Wikipedia

    en.wikipedia.org/wiki/Ecobee

    The thermostats are controlled by using the built-in touchscreen, web portal, or app available for iOS, Android, and the Apple Watch. [3] Other devices are controlled solely through the app or web portal. The thermostat or camera acts as a smart home hub for their other devices. The light switches do not require a thermostat or camera but do ...

  7. Honeywell T55 - Wikipedia

    en.wikipedia.org/wiki/Honeywell_T55

    The Honeywell T55 (formerly Lycoming; company designation LTC-4) is a turboshaft engine used on American helicopters and fixed-wing aircraft (in turboprop form) since the 1950s, and in unlimited hydroplanes since the 1980s. As of 2021, more than 6,000 of these engines have been built. [1]

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