Reolink CX820: microSD or an NVR?
Automated research by Top10Scout editorial team · Not hands-on tested · Last verified 2026-10-05
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Use a microSD card for a straightforward CX820 installation; choose a compatible NVR when keeping recordings away from the outdoor camera or managing several cameras is worth the extra hardware. Both routes still need a powered, connected camera. Buying a recorder changes where footage is managed and stored; it does not fix the camera's view, lighting or a poorly planned cable route.
What changes when the recording leaves the camera?
What changes in daily use
| Decision | Camera-side route | Recorder route |
|---|---|---|
| Storage placement | Store your recordings locally and securely on a microSD card of up to 512 GB | connecting the camera to a compatible Reolink NVR |
| Common camera connection | the CX820 transmits both data and power using just one Ethernet cable | the CX820 transmits both data and power using just one Ethernet cable |
| Common recording modes | Motion-triggered recording (default); Scheduled recording; 24/7 recording | Motion-triggered recording (default); Scheduled recording; 24/7 recording |
CX820 supports a card in the camera and connection to a compatible Reolink NVR. The local card is the smaller hardware commitment when the immediate task is simply to retain footage from this camera. The recorder is more compelling when you already know that several views should be managed together.
Storage location is a real tradeoff. If the only copy is inside the outdoor camera, removing or damaging the camera can also remove that copy. A recorder placed elsewhere separates those locations. That is an architectural advantage, not a guarantee that every incident will be saved.
The network path still has to deliver video to the recorder, and the recorder needs to be operating when footage is sent. We would plan that path before buying a large drive and assuming the storage problem is solved.
Does a microSD card limit you to motion clips?
CX820 lists Motion-triggered recording (default); Scheduled recording; 24/7 recording. Therefore, choosing a card should not be confused with choosing only event-triggered footage. Decide which recording mode serves the question you will later ask of the footage.
Continuous history is useful when you may need context before or after a detection. Motion-triggered recording can make it easier to focus on activity. The correct setting is a user choice, not something established merely by buying the largest supported card.
The specified card limit is Store your recordings locally and securely on a microSD card of up to 512 GB. We have not converted that into a guaranteed number of days: bitrate, recording mode and other settings matter. Check actual retained history after setup rather than treating a marketing storage example as your result.
What does PoE change in either route?
Reolink documents that CX820 carries power and data over an Ethernet cable. Its PoE requirement is IEEE 802.3af, 48V Active. The useful simplification is the camera-side cable run, not an absence of supporting network equipment.
For a card-based installation, plan how the camera receives compatible power and reaches the network. For a recorder-based installation, check whether the selected recorder supplies the required PoE connection or whether a suitable separate power/network arrangement is needed. “NVR” alone is not a complete description of the ports and power available.
Map the cable route, the connection point and the equipment location before ordering. A recorder inside the home may be convenient for storage, but it does not remove the need to get the camera's Ethernet connection there or into the supported network arrangement.
When does a separate recorder become worthwhile?
Reolink presents compatible NVR storage as a way to manage multiple cameras. That is the feature we would pay for when the project is already growing beyond an isolated view. Check the exact recorder's compatibility, camera allowance and storage configuration before choosing it.
For an existing CX820 owner with useful card recordings, keep the current route unless an off-camera copy or centralized management solves a real inconvenience. Do not replace a working recording workflow simply because a separate box sounds more professional.
For a new system, decide the likely camera layout before selecting the recorder. We have deliberately not named a recorder model or quoted a drive price here: a complete-system recommendation requires a specific compatible unit and storage configuration, rather than a generic low headline price.
Which costs and checks belong in the purchase decision?
The camera is common to both routes. The card route adds the card and the power/network equipment the installation needs. The NVR route adds the selected compatible recorder and its storage, with the same need to plan the camera connection. Count equipment you already own only once.
CX820 documents person, vehicle and animal detection without a subscription fee. That shared camera capability is not a reason to buy a recorder merely to avoid a detection plan. Reolink also documents FTP as another storage option, but configuring a separate backup destination is a different project from choosing a card or NVR.
Before relying on either route, make a short recording, find it, export it and confirm which device holds the copy. Our preference is the simplest route that satisfies the footage-location and management requirements you can name today.
Choose microSD for a focused installation
You mainly need recording from this camera and can accept the copy residing with it. Plan the card, PoE connection and the recording mode.
Choose a compatible NVR for a broader system
You want centralized camera management or a recording device in another location. Select the exact compatible recorder and storage before estimating total cost.
Frequently asked questions
Can CX820 record continuously?
Its specification lists continuous, scheduled and motion-triggered recording modes. Configure the intended mode and verify saved footage after installation. Make sure the chosen storage is working and that the saved timeline includes the periods you actually need; a capability in the specification is not proof of a completed setup.
Does PoE mean I need no other equipment?
No. PoE describes the compatible power and data connection to the camera. You still need an appropriate source and network arrangement for the selected storage route. Trace where the cable terminates and how the selected equipment supplies camera power before committing to the installation.
Does an NVR guarantee footage survives camera theft?
Separating the recorder from the camera changes where a copy resides. It does not guarantee that video was delivered or saved before a disruption, nor protect the recorder from every event.
Should I buy an NVR for one camera?
Only if off-camera storage or its management features solve your requirement. A supported card route is a reasonable starting point when a separate recorder adds cost without a useful change.
Official sources
Reolink CX820: checked exact-model source and conditions — checked 2026-10-05