Welcome welcome doorbell shop door sensor is welcome recordable bidirectional infrared intelligent electronic doorbell

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Description

Smart type:Other
Type:SC-YB08
Color classification:Bidirectional sensor (anchor voive) / Bidirectional sensor (with base tone) / Unidirectional sensor (with base tone) / Unidirectional sensor (anchor voive) / Unidirectional sensor (with a computer sound) / Bidirectional sensor (with a computer sound)

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