| 摘要 |
"Twilight" switch device characterised in that it is composed of a photosensitive sensor 1 interacting with adjusting and biasing resistors 2 driving an amplifier module which includes two integrated amplifiers 3 and 4 whose output controls the base of a transistor 5 whose collector is connected to the coil of a relay 6 whose contact is in series in the lights circuit of a motor vehicle, upstream of the selection switch. <IMAGE>
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