eufy C31
Top PickWhat We Like
- Continuous 24/7 recording to microSD
- RTSP output for a NAS or NVR
- Free person, vehicle and pet detection
- 360° pan and tilt from one camera
Worth Noting
- 1080p, where several picks offer 2K
- Power
- Plug-in, 6.5 ft cable
- Resolution
- 1080p
- Local Storage
- microSD up to 256 GB
- Weather Rating
- IP66
A card in the camera plus a stream out over RTSP is the whole subscription story for the C31, and it is why this is the one we recommend first. eufy does not put continuous recording behind a plan: the camera writes to microSD up to 256 GB around the clock, and if you already run a NAS you can point it at that instead. That distinction matters more than any specification here — a camera that only wakes for motion hands you the seconds after a trigger, not the minute before it.
The night picture is what we watched most closely. The C31 produces color without a spotlight, using an f/1.2 aperture and a backside-illuminated sensor, so a porch stays readable after dark without a lamp snapping on and announcing the camera to everyone on the street. Person, vehicle, pet and crying detection all arrive free, and the head pans a full 360°, which means one unit covers a room or a driveway corner that would otherwise take two fixed cameras. The pan motor is quiet enough that we stopped noticing it.
You buy the card separately, and the attribute that matters is endurance rather than speed — a card sold for dash cams or security cameras survives constant rewriting far better than a phone card pulled out of a drawer. Power is the other thing to plan. There is a 6.5-foot cable and a USB adapter in the box, so the honest first step is measuring from the outlet you intend to use to the bracket you intend to drill. A long eave is no help if the nearest socket is in the garage.
Where the C31 asks for patience is Wi-Fi. It is a 2.4 GHz camera, which is the right band for pushing through walls, but the dual external antennas only help if there is signal at the mount to begin with. If your phone shows one bar at the far corner of the yard, that is the camera's problem too, and a mesh node or a closer bracket does more for your footage than any setting in the app.
Bottom line: Our pick for anyone who wants the footage on their own card, recording around the clock, with no account sitting in the middle.