Lorex SG21281-A 21-inch 2-page/8-channel Color Quad Observation System with 1 Camera
 
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Product Description

The Lorex SG21281-A 21-inch 2-page/8-channel Color Quad Observation System with 1 Camera provides convenience, versatility, and quality in a robust and complete system. This system allows you to view up to eight camera locations in real-time sequentially in full-screen, or simultaneously in quad or PIP (picture-in-picture) modes. The included camera has a built-in motion-sensing function so you won't miss any action. Featuring two-way audio, remote control, and other features, the Lorex SG21281A is a complete, self-contained observation system perfect for everything from the home or business applications, to professional security installations.

The SG21281A's 21-inch color picture-tube monitor can be operated via its built-in main panel or via an included remote control. Protected by a durable metal cabinet housing, this monitor includes eight DIN/BNC (Bayonet Neill-Concelman, RF-type) composite video inputs, and eight RCA audio inputs. Also included are eight alarm inputs with two alarm outputs for connecting external alarm devices. The SG21281A monitor features on-screen display of date/time/camera, a stand-by switch that allows recording to occur while monitor is off, video-loss detection warning, and two-way audio capability that lets you speak to a camera location with the push of a button. This unit also features selectable still-frame in quad or full-screen, as well as a POP (picture-out-of-picture) display mode. Multi-voltage compatible, the SG21281A's monitor runs on 100 to 240-volts of power, achieves an extremely high horizontal resolution of 800 TVL (TV lines) at up to 30 fps (frames-per-second), and has an operating temperature of 32 to 104 degrees Fahrenheit.

The camera that comes with the SG21281A utilizes a 0.25-inch color CCD (charge-coupled device) image sensor with a 3.6mm fixed lens. Powered from the monitor via the connecting cable, this camera achieves a horizontal resolution of 330 TVL and is constructed of a durable white ABS (Acrylonitrile Butadiene Styrene) plastic. This unit features an automatic electronic shutter with speeds ranging from 1/60 to 1/100,000 of a second, and a PIR (passive InfraRed) motion sensor that alerts you of camera activity. The SG21281A's camera comes with its own 63-foot connection cable, allowing you to install it virtually anywhere, and can operate in temperatures ranging from -14 to 122 degrees Fahrenheit.

Technical Features:

  • Camera lenses: 3.6mm fixed
  • Image sensor: 0.25-inch color CCD
  • Resolution: monitor 800 TVL up to 30 fps, camera 330 TVL
  • Operating temperature: -14 to 122 degrees Fahrenheit for camera, 32 to 104 degrees Fahrenheit for monitor
  • Monitor dimensions: 19.5 x 18 x 18 inches (W x D x H)
  • Camera dimensions: 3 x 3.6 x 3.5 inches (W x D x H)
Designed primarily for indoor use, the Lorex SG21281A offers you everything you need in a security surveillance system. Though only one camera is included, the SG21281A allows up to eight cameras to be controlled, viewed, and recorded all by a single unit. Users should note that the CCD image sensor in the camera may become permanently damaged if exposed to long hours of direct sunlight or halogen light, so the camera should not be mounted or pointed directly at the sun or other bright-light sources.

About Surveillance Camera Technical Features
Lux rating is the measurement used to indicate how sensitive a camera is to light, and stands for the level of light reflected off a piece of paper by a candle from one meter away. Thus a sensitivity of three Lux would mean a camera could generate an acceptable picture of a piece-of-paper-sized object that was illuminated by the equivalent of three candles from one meter away. The lower the Lux level, the better the camera's ability to work in low-light conditions. The camera's resolution should be greater than or equal to the resolution supported by the system's recorder or monitor. The S/N, or signal to noise ratio, is an important measure of a camera's quality. A poor camera, low-light conditions or poor wiring causes "noise" which consumes processing power and disk space. A camera with a wide dynamic range is ideal, especially for recording areas in which both indoor and outdoor light are present. CCD (charge-coupled device) sensors provide high-quality images that are less susceptible to noise. CMOS (complimentary metal-oxide semiconductor) sensors offer less image quality, but are usually more cost-effective and energy efficient.

Features:
  • 21-inch color monitor is constructed of sturdy metal
  • Includes one 0.25-inch color CCD image-sensor camera
  • Monitor allows for up to eight simultaneous camera connections
  • Camera includes a built-in infrared motion sensor to alert user of camera activity
  • System features two-way audio so you can talk to camera location