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Broader term(s):
automatic guards
[Sapa]
electronic guards
[Sapae]
Related term(s):
detection by photoelectric cells
[Qidq]
►
photoelectric guards
barrages photoélectriques (French)
barreras fotoeléctricas (Spanish)
[facet: Sapaep]
Synonyms
electric eye beams
lightguards
optoelectronic devices
See CISDOC entries »
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►
Narrower term(s):
infrared guards
[Sapaepi]
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