H11AA2 optocouplers equivalent, ac input/phototransistor optocouplers.
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* Bi-polar emitter input Built-in reverse polarity input protection Underwriters Laboratory (UL) recognized File #E90700 VDE approved File #E947.
* AC line monitor
* Unknown polarity DC sensor
* Telephone line interface
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3 4 EMITTER
Parameter TOTAL DE.
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