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In electronics, a remote control (also known as a remote or clicker) is an
electronic device used to operate another device from a distance, usually
wirelessly. In consumer electronics, a <a href="http://www.sheentec.com/finished-
electronic-products/remote-controls/" target="_self">remote control</a> can be
used to operate devices such as a television set, DVD player or other home
appliance. A remote control can allow operation of devices that are out of
convenient reach for direct operation of controls. They function best when used
from a short distance. This is primarily a convenience feature for the user. In
some cases, remote controls allow a person to operate a device that they otherwise
would not be able to reach, as when a garage door opener is triggered from
outside. Early television remote controls (1956–1977) used ultrasonic tones.
Present-day remote controls are commonly consumer infrared devices which send
digitally-coded pulses of infrared radiation. They control functions such as
power, volume, channels, playback, track change, heat, fan speed, and various
other features. Remote controls for these devices are usually small wireless
handheld objects with an array of buttons. They are used to adjust various
settings such as television channel, track number, and volume. The remote control
code, and thus the required remote control device, is usually specific to a
product line. However, there are universal remotes, which emulate the remote
control made for most major brand devices.
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A <a href="http://www.sheentec.com/finished-electronic-products/thermostats/"
target="_self">thermostat</a> is a regulating device component which senses the
temperature of a physical system and performs actions so that the system's
temperature is maintained near a desired setpoint. Thermostats are used in any
device or system that heats or cools to a setpoint temperature, examples include
building heating, central heating, air conditioners, HVAC systems, water heaters,
as well as kitchen equipment including ovens and refrigerators and medical and
scientific incubators. In scientific literature, these devices are often broadly
classified as thermostatically controlled loads (TCLs). Thermostatically
controlled loads comprise roughly 50% of the overall electricity demand in the
United States. A thermostat operates as a "closed loop" control device,
as it seeks to reduce the error between the desired and measured temperatures.
Sometimes a thermostat combines both the sensing and control action elements of a
controlled system, such as in an automotive thermostat. The word thermostat is
derived from the Greek words θερμός thermos, "hot" and στατός
statos, "standing, stationary".
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In electrical engineering, a switch is an electrical component that can
disconnect or connect the conducting path in an electrical circuit, interrupting
the electric current or diverting it from one conductor to another. The most
common type of switch is an electromechanical device consisting of one or more
sets of movable electrical contacts connected to external circuits. When a pair of
contacts is touching current can pass between them, while when the contacts are
separated no current can flow. <a href="http://www.sheentec.com/finished-
electronic-products/switches/" target="_self">Switches</a> are made in many
different configurations; they may have multiple sets of contacts controlled by
the same knob or actuator, and the contacts may operate simultaneously,
sequentially, or alternately. A switch may be operated manually, for example, a
light switch or a keyboard button, or may function as a sensing element to sense
the position of a machine part, liquid level, pressure, or temperature, such as a
thermostat. Many specialized forms exist, such as the toggle switch, rotary
switch, mercury switch, push-button switch, reversing switch, relay, and circuit
breaker. A common use is control of lighting, where multiple switches may be wired
into one circuit to allow convenient control of light fixtures. Switches in high-
powered circuits must have special construction to prevent destructive arcing when
they are opened.
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<a href="http://www.sheentec.com/finished-electronic-products/security-
cameras/" target="_self">Security cameras</a>, also known as video surveillance,
is the use of video cameras to transmit a signal to a specific place, on a limited
set of monitors. It differs from broadcast television in that the signal is not
openly transmitted, though it may employ point-to-point (P2P), point-to-multipoint
(P2MP), or mesh wired or wireless links. Even though almost all video cameras fit
this definition, the term is most often applied to those used for surveillance in
areas that require additional security or ongoing monitoring. (Videotelephony is
seldom called "CCTV". Surveillance of the public using CCTV is common
in many areas around the world. In recent years, the use of body worn video
cameras has been introduced as a new form of surveillance, often used in law
enforcement, with cameras located on a police officer's chest or head. Video
surveillance has generated significant debate about balancing its use with
individuals' right to privacy even when in public.
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The names of circuit boards are: ceramic circuit board, alumina ceramic
circuit board, aluminum nitride ceramic circuit board, circuit board, PCB board,
aluminum substrate, high frequency board, thick copper board, impedance board,
PCB, ultra-thin circuit board, ultra-thin circuit board Thin circuit boards,
printed (copper etching technology) circuit boards, etc. The circuit board makes
the circuit miniaturized and intuitive, and plays an important role in the mass
production of fixed circuits and the optimization of the layout of electrical
appliances. The circuit board can be called Printed Circuit Board PCB, Flexible
Printed Circuit board FPC circuit board (FPC circuit board, also known as flexible
circuit board Flexible circuit board is a kind of high reliability made of
polyimide or polyester film as the base material. It is an excellent flexible
printed circuit board. It has the characteristics of high wiring density, light
weight, thin thickness and good bendability.) and reechas, the birth and
development of Soft and hard combination plate-FPC and PCB, gave birth to The new
product of rigid-flex board. Therefore, the flexible and rigid board is a flexible
circuit board and a rigid circuit board, which are combined according to the
relevant process requirements after pressing and other processes to form a circuit
board with FPC characteristics and PCB characteristics. It has a variety of types,
such as <a href="http://www.sheentec.com/kitchen-appliance-circuit-
boards/dishwasher-circuit-boards/" target="_self">dehumidifier circuit boards</a>,
<a href="http://www.sheentec.com/home-appliance-circuit-boards/thermostat-
circuit-boards/" target="_self">thermostat circuit boards</a>, <a
href="http://www.sheentec.com/industrial-control-circuit-boards/water-treatment-
circuit-boards/" target="_self">water treatment circuit boards</a>, <a
href="http://www.sheentec.com/home-appliance-circuit-boards/security-camera-
circuit-boards/" target="_self">security camera circuit boards</a>, <a
href="http://www.sheentec.com/kitchen-appliance-circuit-boards/steam-oven-
circuit-boards/" target="_self">steam oven circuit boards</a>, <a
href="http://www.sheentec.com/home-appliance-circuit-boards/vacuum-cleaner-
circuit-boards/" target="_self">vacuum cleaner circuit boards</a>, etc.<br/>
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