Ads
related to: how to reset co detector light switch settings on ge oven manual jkp codeamazon.com has been visited by 1M+ users in the past month
smartholidayshopping.com has been visited by 1M+ users in the past month
Search results
Results From The WOW.Com Content Network
Manual fire alarm activation requires human intervention, as distinct from automatic fire alarm activation such as that provided through the use of heat detectors and smoke detectors. It is, however, possible for call points/pull stations to be used in conjunction with automatic detection as part of the overall fire detection and alarm system .
Conceptual through-beam system to detect unauthorized access to a secure door. If the beam is interrupted, the detector triggers an alarm. A photoelectric sensor is a device used to determine the distance, absence, or presence of an object by using a light transmitter, often infrared, and a photoelectric receiver. They are largely used in ...