HeimVision HM245 8CH 1080P Security Camera System, 5MP-Lite HD-TVI DVR 4Pcs 1920TVL Outdoor/Indoor Weatherproof CCTV Surveillance Camera with Night Vision, Motion Alert, Face Detection, Remote Access

HeimVision HM245 8CH DVR Camera SystemLet You Watch Over What You Love from Every Angle, Indoors and Outdoors, Day and Night, Rain or Shine.Keep Your Property Safe and Protected, Keep the Things You Care under the 24/7 SurveillanceWatch over your home inside the crystal-clear 1080HD video, and see the visitors from everywhere. With immediately motion detection and mobile indicators, You can see what’s occurring out of your smartphone, pill, and PC. Keep your lifestyles more secure and prevent awful peopleto damage into your own home.Boost your home safety with the HeimVision safety digicam system. Save films captured by your IP cameras and overview them at any time. 24/7 recording and playback file each vital second you spend with your families.Smart safety for your private home. HeimVison Wired DVR Security Camera System transmits by way of a wired community. Make your sign is greater solid and without interference from external indicators. Perfect for tracking areas like villa, home, office, keep, motel,warehouse, school, enterprise or someplace else (out of doors/ indoor).Note that: Package comes without HDD, you want to buy an extra 3.5inch tough pressure for recording (Support Max 6TB difficult power)Motion Detection & Email AlertCustomize your very own detection plan and sector for each camera exactly in your needs.When motion is detected, smart notifications with e mail/ picture indicators may be pushed in your telephone via iPhone/ Android App. Get greater peace of mind.Face Detection & Human DetectionWhen the digital camera detects human face or shapes even it’s miles a sculpture it’ll trigger e-mail signals.Provide to limit fake alarms, no extra pointless alerts due to the motion of insects and other small actions.Privacy Protection & Video Block AlertConceal components of the photograph from the live view to protect your privateness, make you stay at domestic relaxed.The digital camera will alert and e-mail to you whilst the video lost or the digital camera become obscured (like power off, line damage or can not document )IP66 Weatherproof CamerasThe IP cameras are rated as dirt-tight and water resistant and cowl with durable housing. Not afraid to courageous the snow, rain, or warmth.IP cameras’ operating temperature can be ranged from -4°F to 122°F (-20°C to 50°C)Infrared Clear Day Night VisionFeaturing three.6mm LEDs with IR-CUT function, 85° viewing angle, 65ft Night Vision variety.The digital camera’s infrared mode is robotically activated in low lighting situations. It can simply display everything even at night.Various Remote ViewingDownload unfastened App into your Phone or set up VMS software into your PC/ Laptop.Create an account and input your device ID into your Phone App, View live and document videos any time of the day from anywhere.——————————————————————————————————————————————–

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HeimVision HM245 8CH 1080P Security Camera System, 5MP-Lite HD-TVI DVR 4Pcs 1920TVL Outdoor/Indoor Weatherproof CCTV Surveillance Camera with Night Vision, Motion Alert, Face Detection, Remote Access
【Plug & Play and Easy Setup】【IP66 Weatherproof Camera】【Motion Alert and Face Detection】【Privacy Protection and Mobile Viewing】【Robust Quality and Service】

Alert or ALERT may refer to:

  • Alertness, the state of active attention by high sensory awareness.

A camera is an instrument used to capture and store images and videos, either digitally via an electronic image sensor, or chemically via a light-sensitive material such as photographic film. As a pivotal technology in the fields of photography and videography, cameras have played a significant role in the progression of visual arts, media, entertainment, surveillance, and scientific research. The invention of the camera dates back to the 19th century and has since evolved with advancements in technology, leading to a vast array of types and models in the 21st century.

Cameras function through a combination of multiple mechanical components and principles. These include exposure control, which regulates the amount of light reaching the sensor or film; the lens, which focuses the light; the viewfinder, which allows the user to preview the scene; and the film or sensor, which captures the image.

Several types of cameras exist, each suited to specific uses and offering unique capabilities. Single-lens reflex (SLR) cameras provide real-time, exact imaging through the lens. Large-format and medium-format cameras offer higher image resolution and are often used in professional and artistic photography. Compact cameras, known for their portability and simplicity, are popular in consumer photography. Rangefinder cameras, with separate viewing and imaging systems, were historically widely used in photojournalism. Motion picture cameras are specialized for filming cinematic content, while digital cameras, which became prevalent in the late 20th and early 21st century, use electronic sensors to capture and store images.

The rapid development of smartphone camera technology in the 21st century has blurred the lines between dedicated cameras and multifunctional devices, profoundly influencing how society creates, shares, and consumes visual content.

DVR can refer to:

  • Dalnevostochnaya Respublika, a nominally independent state that existed from April 1920 to November 1922 in the easternmost part of the Russian Far East
  • Data validation and reconciliation
  • Derwent Valley Railway (disambiguation)
  • Devco Railway
  • Differential Voting Right, a kind of equity share
  • Digital video recorder
  • Discrete valuation ring
  • Discrete variable representation
  • Distance-vector routing
  • Direct volume rendering
  • Dynamic voltage restoration
  • DVR College of Engineering and Technology
  • Van Riebeeck Decoration (DVR), a South African military award

In general, detection is the action of accessing information without specific cooperation from with the sender.

In the history of radio communications, the term "detector" was first used for a device that detected the simple presence or absence of a radio signal, since all communications were in Morse code. The term is still in use today to describe a component that extracts a particular signal from all of the electromagnetic waves present. Detection is usually based on the frequency of the carrier signal, as in the familiar frequencies of radio broadcasting, but it may also involve filtering a faint signal from noise, as in radio astronomy, or reconstructing a hidden signal, as in steganography.

In optoelectronics, "detection" means converting a received optical input to an electrical output. For example, the light signal received through an optical fiber is converted to an electrical signal in a detector such as a photodiode.

In steganography, attempts to detect hidden signals in suspected carrier material is referred to as steganalysis. Steganalysis has an interesting difference from most other types of detection, in that it can often only determine the probability that a hidden message exists; this is in contrast to the detection of signals which are simply encrypted, as the ciphertext can often be identified with certainty, even if it cannot be decoded.

In the military, detection refers to the special discipline of reconnaissance with the aim to recognize the presence of an object in a location or ambiance.

Finally, the art of detection, also known as following clues, is the work of a detective in attempting to reconstruct a sequence of events by identifying the relevant information in a situation.

The face is the front of an animal's head that features the eyes, nose and mouth, and through which animals express many of their emotions. The face is crucial for human identity, and damage such as scarring or developmental deformities may affect the psyche adversely.

Indoor(s) may refer to:

  • the interior of a building
  • Indoor environment, in building science, traditionally includes the study of indoor thermal environment, indoor acoustic environment, indoor light environment, and indoor air quality
  • Built environment, the human-made environment that provides the setting for human activity
  • Indoor athletics
  • indoor games and sports

In physics, motion is when an object changes its position with respect to a reference point in a given time. Motion is mathematically described in terms of displacement, distance, velocity, acceleration, speed, and frame of reference to an observer, measuring the change in position of the body relative to that frame with a change in time. The branch of physics describing the motion of objects without reference to their cause is called kinematics, while the branch studying forces and their effect on motion is called dynamics.

If an object is not in motion relative to a given frame of reference, it is said to be at rest, motionless, immobile, stationary, or to have a constant or time-invariant position with reference to its surroundings. Modern physics holds that, as there is no absolute frame of reference, Newton's concept of absolute motion cannot be determined. Everything in the universe can be considered to be in motion.: 20–21 

Motion applies to various physical systems: objects, bodies, matter particles, matter fields, radiation, radiation fields, radiation particles, curvature, and space-time. One can also speak of the motion of images, shapes, and boundaries. In general, the term motion signifies a continuous change in the position or configuration of a physical system in space. For example, one can talk about the motion of a wave or the motion of a quantum particle, where the configuration consists of the probabilities of the wave or particle occupying specific positions.

Night or nighttime is the period of darkness when the Sun is below the horizon. The opposite of nighttime is daytime. Sunlight illuminates one side of the Earth, leaving the other in darkness. Earth's rotation causes the appearance of sunrise and sunset. Moonlight, airglow, starlight, and light pollution dimly illuminate night. The duration of day, night, and twilight varies depending on the time of year and the latitude. Night on other celestial bodies is affected by their rotation and orbital periods. The planets Mercury and Venus have much longer nights than Earth. On Venus, night lasts 120 Earth days. The Moon's rotation is tidally locked, rotating so that one of the sides of the moon always faces Earth. Nightfall across portions of the near side of the Moon results in lunar phases visible from Earth.

Organisms respond to the changes brought by nightfall, including darkness, increased humidity, and lower temperatures. Their responses include direct reactions and adjustments to circadian rhythms, governed by an internal biological clock. These circadian rhythms, regulated by exposure to light and darkness, affect an organism's behavior and physiology. Animals more active at night are called nocturnal and have adaptations for low light, including different forms of night vision and the heightening of other senses. Diurnal animals are active during the day and sleep at night; mammals, birds, and some others dream while asleep. Fungi respond directly to nightfall and increase their biomass. With some exceptions, fungi do not rely on a biological clock. Plants store energy produced through photosynthesis as starch granules to consume at night. Algae engage in a similar process, and cyanobacteria transition from photosynthesis to nitrogen fixation after sunset. In arid environments like deserts, plants evolved to be more active at night, with many gathering carbon dioxide overnight for daytime photosynthesis. Night-blooming cacti rely on nocturnal pollinators such as bats and moths for reproduction. Light pollution disrupts the patterns in ecosystems and is especially harmful to night-flying insects.

Historically, night has been a time of increased danger and insecurity. Many daytime social controls dissipated after sunset. Theft, fights, murders, taboo sexual activities, and accidental deaths all became more frequent due in part to reduced visibility. Cultures have personified night through deities associated with some or all of these aspects of nighttime. The folklore of many cultures contains "creatures of the night," including werewolves, witches, ghosts, and goblins, reflecting societal fears and anxieties. The introduction of artificial lighting extended daytime activities. Major European cities hung lanterns housing candles and oil lamps in the 1600s. Nineteenth-century gas and electric lights created unprecedented illumination. The range of socially acceptable leisure activities expanded, and various industries introduced a night shift. Nightlife, encompassing bars, nightclubs, and cultural venues, has become a significant part of urban culture, contributing to social and political movements.

Outdoor(s) may refer to:

  • Wilderness
  • Natural environment
  • Outdoor cooking
  • Outdoor education
  • Outdoor equipment
  • Outdoor fitness
  • Outdoor literature
  • Outdoor recreation
  • Outdoor Channel, an American pay television channel focused on the outdoors


Security is protection from, or resilience against, potential harm (or other unwanted coercion). Beneficiaries (technically referents) of security may be persons and social groups, objects and institutions, ecosystems, or any other entity or phenomenon vulnerable to unwanted change.

Security mostly refers to protection from hostile forces, but it has a wide range of other senses: for example, as the absence of harm (e.g., freedom from want); as the presence of an essential good (e.g., food security); as resilience against potential damage or harm (e.g. secure foundations); as secrecy (e.g., a secure telephone line); as containment (e.g., a secure room or cell); and as a state of mind (e.g., emotional security).

Security is both a feeling and a state of reality. One can feel secure, while they aren't, but also feel insecure while they are secure. This distinction is usually not very clear to express in the English language.

The term is also used to refer to acts and systems whose purpose may be to provide security (security company, security police, security forces, security service, security agency, security guard, cyber security systems, security cameras, remote guarding). Security can be physical and virtual.

Surveillance is the monitoring of behavior, many activities, or information for the purpose of information gathering, influencing, managing, or directing. This can include observation from a distance by means of electronic equipment, such as closed-circuit television (CCTV), or interception of electronically transmitted information like Internet traffic. Increasingly, governments may also obtain consumer data through the purchase of online information, effectively expanding surveillance capabilities through commercially available digital records. It can also include simple technical methods, such as human intelligence gathering and postal interception.

Surveillance is used by citizens, for instance for protecting their neighborhoods. It is widely used by governments for intelligence gathering, including espionage, prevention of crime, the protection of a process, person, group or object, or the investigation of crime. It is also used by criminal organizations to plan and commit crimes, and by businesses to gather intelligence on criminals, their competitors, suppliers or customers. Religious organizations charged with detecting heresy and heterodoxy may also carry out surveillance. Auditors carry out a form of surveillance.

A byproduct of surveillance is that it can unjustifiably violate people's privacy and is often criticized by civil liberties activists. Democracies may have laws that seek to restrict governmental and private use of surveillance, whereas authoritarian governments seldom have any domestic restrictions.

Espionage is by definition covert and typically illegal according to the rules of the observed party, whereas most types of surveillance are overt and are considered legal or legitimate by state authorities. International espionage seems to be common among all types of countries.

A system is a group of interacting or interrelated elements that act according to a set of rules to form a unified whole. A system, surrounded and influenced by its environment, is described by its boundaries, structure and purpose and is expressed in its functioning. Systems are the subjects of study of systems theory and other systems sciences.

Systems have several common properties and characteristics, including structure, function(s), behavior and interconnectivity.

TVI may refer to:

  • RTL-TVI, a French-language television station in Belgium
  • TVi (channel), a Ukrainian TV-channel
  • TVi, former name of TV Okey, a Malaysian TV-network
  • Tamil Vision International, a Tamil language television channel in Toronto, Canada
  • TeleVideo, a manufacturer of computer terminals
  • Televisão Independente, a Portuguese television channel
  • TVI Community College (now Central New Mexico Community College) in Albuquerque, New Mexico
  • Television interference
  • Television Iwate, a television company in Iwate Prefecture, Japan
  • Television of Iran (TVI), a former name of IRIB TV1
  • Tactical vehicle intervention, a pursuit tactic by which a pursuing car can force a fleeing car to turn sideways abruptly, causing the driver to lose control and stop
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