The doorbell can be seen, it is more reassuring to go out, the elderly are disturbed, whether the children go home on time after school, easy to operate, safer, and can be operated by multiple accounts.
Video doorbell, it is more secure to go out, the elderly are disturbed, whether the children go home on time after school, easy to operate, more secure, and can be operated by multiple accounts.
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What does the old man mean by being disturbed?
nice job!
The shape is not bad.