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Timers, powered thermostats, and the like are other examples. An uninterruptible power supply could be considered to waste standby power only when the computer it protects is off. Properly disconnecting standby power is, at worst, inconvenient; powering down completely, for example, an answering machine not handling a call, renders it useless.
A time switch (also called a timer switch, or simply timer) is a device that operates an electric switch controlled by a timer. Intermatic introduced its first time switch in 1945, which was used for "electric signs, store window lighting, apartment hall lights, stokers, and oil and gas burners." A consumer version was added in 1952.
By 1959 a Lux Time Ltd. facility was built in Ontario, Canada. In June 1961, the Robertshaw-Fulton Controls Company, a leading manufacturer of thermostats and controls, bought out the Lux Clock Manufacturing Company. [1] Robertshaw also produced clocks and timers under the Robertshaw Controls Company, Lux Time Division name. Robertshaw sold its ...
Building automation (BAS), also known as building management system (BMS) or building energy management system (BEMS), is the automatic centralized control of a building's HVAC (heating, ventilation and air conditioning), electrical, lighting, shading, access control, security systems, and other interrelated systems.
A motor controller is a device or group of devices that can coordinate in a predetermined manner the performance of an electric motor. [1] A motor controller might include a manual or automatic means for starting and stopping the motor, selecting forward or reverse rotation, selecting and regulating the speed, regulating or limiting the torque, and protecting against overloads and electrical ...
Honeywell electronic thermostat in a store. Heating and cooling losses from a building (or any other container) become greater as the difference in temperature increases. A programmable thermostat allows reduction of these losses by allowing the temperature difference to be reduced at times when the reduced amount of heating or cooling would not be objectionable.