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fire detector | |||
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fire alarm box | |||
sensor | |||
fire alarm casing | |||
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fire alarms | |||
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ionisation fire-alarm |
brandmelder : 11 phrases in 6 subjects |
Antennas and waveguides | 1 |
Communications | 1 |
Electronics | 1 |
Materials science | 6 |
Mineral products | 1 |
Transport | 1 |