Pro Video CVC-235CS B/W In-ceiling Speaker Camera

This speaker camera utilizes a 0.33-inch black-and-white CCD (charge-coupled device) sensor with a 3.6-millimeter wide-angle pinhole lens, and provides 512-by-492 effective picture elements. The CVC-235CS has a high resolution of 420 horizontal TVL (TV lines), is very sensitive to light with a minimum illumination of 0.5 Lux, and achieves a S/N (signal-to-noise) ratio of 46 dB or better. The Pro Video CVC-235CS uses the EIA (Electronics Industries Association) scanning system, and includes a standard RCA video output with a BNC (Bayonet Neill-Concelman) adapter. This unit runs on 12-volts DC power, and can operate in temperatures ranging from 14 to 122 degrees Fahrenheit. The CVC-235CS comes complete with a built-in automatic electronic shutter with speeds ranging from 1/50 to 1/100,000 of a second, and a white metal speaker-grille housing.

Technical Features:

• S/N ratio: better than 46 dB
• Sensitivity: minimum illumination of 0.5 Lux
• Effective pixels: 512 by 492 pixels
• Horizontal resolution: 420 TVL
• Operating temperatures: 14 to 122 degrees Fahrenheit
• Dimensions: 12 inches in diameter, 8-inch dual-cone speaker

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.