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Consumer Reports rates its nighttime video excellent and its daytime video decent. It gives a midlevel smart-features rating because the C31 is limited to basic person and motion detection.
eufy Video Doorbell C31
eufy's budget doorbell, with a removable battery and a microSD slot up to 128GB. Free alerts cover people only.
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Video Doorbell C31, model T8223, battery or wired
Video Doorbell C31, model T8223, battery or wired
What works. What doesn't.
Storage
eufy lists microSD storage up to 128GB, card not included.
Privacy
We have not found privacy details beyond local storage.
Installation
eufy lists 16-24V AC at 10VA minimum and 40VA maximum. With the existing chime connected it only trickle-charges, and eufy says a full charge takes 6 to 7 days. Pre-roll and 24/7 recording need a 30VA transformer and a bypassed chime.
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Security camerasBuying guide
Video doorbells without a subscription, and the wiring each one needs
Four doorbells that save video locally with no monthly fee, with each maker's transformer, chime and 24/7 recording rules side by side.