relais
- noun
- /rɪˈleɪ/
- UK
- The engineer installed a new relais to control the lighting system in the building.
Examples
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Technicians often test each relais to ensure the equipment operates safely.
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A faulty relais can cause the entire circuit to stop working properly.
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The relais controlled the lights in the building.
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A faulty relais can cause electrical failures.
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The engineer installed a new relais to control the lighting system in the building.
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Technicians often test each relais to ensure the equipment operates safely.
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A faulty relais can cause the entire circuit to stop working properly.
Synonyms
A small device that turns electrical power on or off
A device that uses a small current to switch another circuit on or off
A device that connects and cuts the flow of electricity to turn a light or machine on and off
A small device on a wall that turns electricity on and off
How Powerful
Surface Forms
Etymology
The word relais used for an electrical switch borrows the idea of 'passing on' from the English relay and the old French stopping places; like a relay race, a relais 'hands on' a signal to open or close a circuit.