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An indoor light switch equipped with PIR-based occupancy sensor [1]. An occupancy sensor is an indoor device used to detect the presence of a person. Applications include automatic adjustment of lights or temperature or ventilation systems in response to the quantity of people present.
This separation helps the motion detector to discriminate between field-wide illumination and moving objects. When a person walks from one angle (beam) to another, the detector will only intermittently see the moving person. This results in a rapidly changing sensor signal which is used by the electronics to trigger an alarm or to turn on lighting.
The following is a list of Bravia television products manufactured by Sony. In 2005 they discontinued their previous "WEGA LCD" line, and all Sony televisions are now known as Sony Bravia. Starting in 2013, the model year is encoded in a letter of the alphabet, so all 2015 models have a letter "C" in their name.
The timer may switch equipment on, off, or both, at a preset time or times, after a preset interval, or cyclically. A countdown time switch switches power, usually off, after a preset time. A cyclical timer switches equipment both on and off at preset times over a period, then repeats the cycle; the period is usually 24 hours or 7 days.
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Announced by Sony on August 24, 2011, and launched alongside its brother the Sony Alpha 77, [1] the Sony Alpha 65 is the top-tier for Sony's midrange Alpha SLT camera line.. The Sony Alpha 65 does not have a direct predecessor like the Sony Alpha 77 but it is still considered a replacement for the Sony Alpha 700 with less high-end specifications compared to its siblings.
A mercury switch is an electrical switch that opens and closes a circuit when a small amount of the liquid metal mercury connects metal electrodes to close the circuit. There are several different basic designs (tilt, displacement, radial, etc.) but they all share the common design strength of non-eroding switch contacts.
The transmitter in the remote control handset sends out a stream of pulses of infrared light when the user presses a button on the handset. A transmitter is often a light-emitting diode (LED) which is built into the pointing end of the remote control handset. The infrared light pulses form a pattern unique to that button.