low-voltage relay

low-voltage relay

[′lō ¦vōl·tij ′rē‚lā]
(communications)
A relay that responds to the drop in voltage (increase in current) when a telephone line becomes active; used to activate interception and eavesdropping equipment.
References in periodicals archive ?
Without a low-voltage relay driver, end applications resorted to discrete components with higher cost, more board space, and quality issues.
Due to lack of availability of low-voltage relay drivers, the end applications have resorted to discrete components.
Texas Instruments introduced a fully integrated, seven-channel relay driver that can support low-voltage relays from as low as 1.8 V up to 5 V.
RF control devices are familiar to many lighting professionals, but simply communicate differently: occupancy sensors, photosensors, low-voltage relays, wall switches, plug-load controls, hotel card switches and shade controls.
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