| 摘要 |
A temperature sensing switch is disclosed which has a needle moving in response to the temperature within a translucent case. On the outside of this case are mounted one or a plurality of movable needle position detectors, in each of which a light emitter sends a beam of light through the case, to be picked up by a light detector. When the needle interrupts this beam of light, the light detector emits a signal. By moving these position detectors with respect to the case, the temperatures for production of these signals can be adjusted.
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