What is a Digital Photo Frame?A digital photo frame is a picture frame that displays digital images without the need to print them first. Digital photo frames have become a necessary accessory to Digital...
Sure you might have read articles on this subject, CMOS stands for Complementary metal–oxide–semiconductor, CCD for Charge-coupled device ... Well, this might just make you more confused!In plain English, CCD...
If you have tried cleaning and oiling your clock as described previously and it still will not run, here is some more information to try. There can be many problems that will stop the clock so a close...
With technology advancing extremely fast in the area of electronics and imaging devices finding the right wireless security sytem for your needs can be hard. Thinking ahead to determine the use and...
The basic rules is:The smaller the focal length number (eg. 3.6mm, 4mm), the wider area you can see; the bigger the focal length (12mm, 16mm), the further you can see, but with narrower viewing angle. You...
Sometimes called weather proof camera, or day night camera, an outdoor camera is usually with a sealed body, enabling the camera to be installed in outdoor environment. However, it is recommended that the...
InfraRed cameras usually have a CDS sensor system that senses the light condition. When the environment is getting dark, the sensor will measure the condition, then calculate the data and send instruction to...
Lux (1/10 of a foot candle) is a standardised method by which to measure a security camera's sensitivity to light. The lower the number, the less light it will take to reproduce a clear image. For example: A...
Security camera resolution is a measurement of the security cameras clarity. A security cameras resolution is determined by the number of horizontal video lines that the security camera needs in order to...
In CCTV security system terms, DVR stands for Digital Video Recorder, it is used to digitally record images from the security cameras. There are different ways to record images from your cameras. In the old...