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Service:Life Time Warranty/Cash On Delivery/Freeshipping
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Support Battery(not included)or USB Power Supply.
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Doorbell Wireless with PIR detector.
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360°Rotate.
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30 Unique Ringtones,include 12 Different Country Languages Greeting(Chinese/English/Thai).
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Detection Range:300 Meters in open space.
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Range:left And Right 110°.
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4 Level Volume Adjustment(0-95dB).
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Alarm Function.
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No False Positives.
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Easy Installation.
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Infrared Night Vision Detection.