FireDOC Search
Author
National Safety News
Title
Electronic Security Systems.
Journal
National Safety News, Vol. 106, No. 1, 63-68, July 1972
Keywords
industrial plants
|
fire detection systems
|
photoelectric detectors
|
television
|
radio equipment
Identifiers
audio detection; motion detection; vibration detector; photo-electric; electro-mechanical; electronic fence; radio-frequency; closed-circuit television; door, gate control