This could cause a contact to close and activate some warning device such as a buzzer, or cause the switcher to select the camera that detected the motion. The sampling process may take somewhere between one fiftieth of a second and one second to detect a change, depending on the method of sampling.
The U.S. Bureau of Labor Statistics (BLS) reported that jewelers and precious stone and metal workers in general made an average annual salary of $38,840 in May 2012 (www.bls.gov). The bottom 10% made $19,600 a year or less, and the top 10% made $61,940 a year or more.
According to figures released by the Bureau of Labor Statistics in May 2011, the median annual salary for a fiber optic technician in the United States was $51,720, or $24.87 per hour.