Optical flame sensor having opaque hollow tube
Optical flameout detector
Optical indicator device
Optical interface between receiver and tag response signal analy
Optical intrusion detection system and method
Optical media monitoring device
Optical methods for detecting the position or state of an...
Optical motion sensor and method for operating same
Optical particle detector
Optical particle detectors
Optical reading system
Optical sensor
Optical signaling device for electrical monitoring devices
Optical smoke detector
Optical smoke detector
Optical smoke detector
Optical smoke detector
Optical smoke detector
Optical smoke detector and method of cleaning
Optical smoke detector with active self-monitoring