Rosacea - Symptoms. Rosacea causes a range of symptoms, although not everyone will experience them all. Most people with rosacea have periods when their symptoms are particularly troublesome, followed by periods when their symptoms are less so.
Most motion detectors have a built-in override: 1  Normally the switch is kept on all the time. 2  If you turn the switch off and on within a second or so, the light will stay on, and this overrides motion detection. 3  To go back to normal operation, turn the switch off and wait ~10 seconds, then turn back on.
Although technological advancements have improved the functioning of motion detectors, the basic purpose and system of this device remains the same. A motion detector is basically designed to detect motion or movement in a designated area and may instantly send a signal to the security alarm system.