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Air conditioning
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Blennorragia
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Retified wood
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Gonorrhoea
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Uterus
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Transmission electron microscope
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Electromagnetism
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Bait
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Geyser
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Eccentricity
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Teflon
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AIDS
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Alum
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Albinism
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Fermion
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Microbiome
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New Technology Telescope
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SCAR
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Self-routing switch
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Cranial vault
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Trap
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Quantum chromodynamics
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Fibrinogen
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Hijacker
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Greengage
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Protease
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Carbohydrate
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Weak opiate analgesic
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Amblyopia
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Soft acid
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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