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Counterfeit medicine
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Cross-talk
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Ketoacidosis
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Supergene
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Touch screen
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Mass number
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Boot
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DSL
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Allotropy
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Ardipithecus
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Endoderm
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Haemoccult
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Chlordecone
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Core sampling
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Podosome
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CERN
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Dynamo effect
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Cirrostratus cloud
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Plasma membrane
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Tsunamite
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Perching
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Peridotite
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Bioluminescence
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Hamiltonian
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Bituminous shale
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Blogosphere
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Cystoscopy
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Severe persistent asthma
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Hormone-sensitive
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RIR
Dry contact
A dry contact is a type of switch that opens or closes controlled by the electricity distributor depending on the time period: peak or off-peak, for example.
On electronic meters it is identified by four terminals that operate in pairs. Marked C1/C2 and C3/C4, they are not sealed and can therefore be connected to a day/night switch.
This diagram of an electricity meter shows the dry contact at C1/C2 and C3/C4. © DR
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