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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 ...
It also has a timer that signals the electronic control unit after a set period of inactivity. The control unit uses this signal to activate the switch/relay to turn equipment on or off. For lighting applications, there are three main sensor types: passive infrared , ultrasonic , [ 8 ] and hybrid.
In electrical wiring, a light switch is a switch most commonly used to operate electric lights, permanently connected equipment, or electrical outlets. Portable lamps such as table lamps may have a light switch mounted on the socket, base, or in-line with the cord.
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. Some objectives of building ...
Electronic and electrical devices in standby mode that can be woken by a remote control, e.g. some air conditioners, audio-visual equipment such as a television receiver; Electronic and electrical devices that can carry out some functions even when switched off, e.g. with an electrically powered timer.