Assertion: doorbell's motion sensor | /r/HasProperty | built-in
Facets:
Source sentences:
text: It activates when the visitor presses the button of the doorbell, or alternatively, when the doorbell senses a visitor with its built-in motion sensors.
text: It activates when the visitor presses the button of the doorbell, or alternatively, when the doorbell senses a visitor with its built-in motion sensors.