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说明：

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说明：压力传感器

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说明：Dragino LoRaWAN Door Sensor - US915MHz

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说明：

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说明：

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说明：

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说明：霍尔开关

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说明：

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说明：霍尔传感芯片

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说明：MAGNETIC SWITCH BIPOLAR RADIAL

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说明：霍尔效应的线性电流传感器

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说明：The RE46C180 is a next generation low power programmable CMOS ionization type smoke detector IC. With minimal external components this circuit will provide all the required features for an ionization type smoke detector. An on-chip oscillator strobes power to the smoke detection circuitry for 5ms every 10 seconds to keep standby current to a minimum. A check for a low battery condition is performed every 80 seconds and ionization chamber test is performed once every 320 seconds when in standby. The temp

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说明：贴片霍尔单极开关电路

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说明：

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说明：The RE46C144 is low power CMOS photoelectric type smoke detector IC. With minimal external components this circuit will provide all the required features for a photoelectric type smoke detector. The RE46C144 was designed for use in smoke detectors that comply with Underwriters Laboratory Specification UL217 and UL268.