Do Security Cameras Record All the Time?

The short answer

No — and the reason is worth understanding, because it changes which camera you should buy. There are two ways a security camera can decide what to keep. Event recording waits for a trigger (motion, a person, a doorbell press), records a clip, then goes quiet. Continuous recording writes everything the lens sees, all the time, and overwrites the oldest footage when the storage fills. Almost every camera sold for the home does the first. Only some can do the second, and they share one trait: they are plugged into the wall.

TP-Link’s support FAQ states the rule more plainly than most marketing does: “Battery-powered cameras and doorbells do not support continuous recording.” eufy says the same of its battery cameras. Ring’s and Arlo’s battery cameras record clips to the cloud, and only when you pay. So if your mental picture of a security camera is a tape running all night, you are picturing a plug-in camera with a memory card — which happens to be the cheapest kind.

Why battery cameras only record clips

A battery camera survives for months because it is asleep almost all the time. A low-power motion sensor — usually a passive infrared sensor that reacts to body heat, sometimes paired with radar, as eufy publishes for the eufyCam S330 — watches the scene while the camera itself is off. When the sensor trips, the camera wakes, records for a set number of seconds and goes back to sleep. Recording continuously would mean the camera, its radio and its processor running flat out around the clock, which no battery you would want to hang on a wall could sustain.

eufy’s product page for the S330 says exactly this in its own words: the camera “is battery-powered and is designed to offer a balance between battery life and event capturing.” Its support page for a battery SoloCam adds that the camera “will not be able to record continuously even if it is connected to eufy HomeBase 3.” That is not a limitation of eufy; it is the physics of every battery camera, and the S330 remains our top no-fee camera for other reasons — the base station, the solar panel, the 4K — covered in the main camera ranking.

Two consequences follow. First, a battery camera will sometimes miss the start of an event — the person is already at the door by the time the clip begins. Second, anything that does not trigger the sensor is not recorded at all. For a driveway or a back gate, that is usually fine. For a front entrance where you want the whole story, it is a real gap.

What continuous recording actually needs

Three things, and TP-Link’s FAQ lists two of them outright: power that never runs out, and somewhere to put the footage — “a microSD card (sold separately) or a Tapo Hub is required to use the continuous recording feature.” The third is a card that can take the punishment. Continuous recording writes to the card every second of every day, and TP-Link recommends a Class 10 (U1/V10) or faster card and says high-endurance cards are strongly recommended for continuous recording. A card sold for a phone will work until it does not; a high-endurance card is built for exactly this job and costs a little more.

That is the whole recipe. Notice what is not in it: a subscription. A plug-in camera writing to its own card does not need a cloud account to store anything, and the footage stays on hardware you own — which also means it keeps recording when the internet is down, and nobody but you can read it. The FTC’s consumer guidance on home cameras is about protecting footage that leaves the house; footage on a card in your hallway mostly does not.

The two cheap cameras that record all day for free

Once you know the recipe, the shopping list is short. The two cameras below are the plug-in cameras we recommend most often, and both publish continuous local recording with no plan.

Wyze’s spec page for the Cam v4 lists “24/7 Local Recording” to a microSD card up to 256GB, and Wyze’s local storage page says you can choose between “Continuous and Events Only recording” and that “local storage is completely free to Wyze users.” TP-Link’s spec page for the Tapo C120 lists a microSD slot up to 512GB, and its continuous-recording FAQ describes Continuous Recording as footage recorded “without interruption during the scheduled hours” against Detection Recording, which “uses less storage but will have gaps in coverage.” Both are indoor/outdoor rated — IP65 for the Wyze, IP66 for the Tapo — and both need a power cable, which is the one thing that decides where they can go.

Choosing between them is the subject of our Wyze vs Tapo comparison. The short version: the Wyze has the sharper sensor, the Tapo takes a bigger card and a quieter 940nm infrared option, and both are so cheap that a continuously recording camera at the front door costs less than a year of most cloud plans.

What the cloud brands offer instead

Ring’s own list of what its cameras do without a plan is Live View, motion alerts, two-way talk, motion zones and Alexa; recorded video of any kind needs a subscription, and Ring’s plans are built around clips with up to 180 days of playback rather than a continuous stream. Arlo does offer continuous video recording, but only as a feature of its top Ultra Secure plan tier, which Arlo’s plan page describes as adding 30-day continuous recording for a limited number of cameras. Our Arlo Pro review works through what that costs; the Ring vs Arlo comparison puts the two cloud approaches side by side.

By camera type, at a glance

So what should you actually buy?

Think about where you want a complete record and where you want an alert. A front door, a shared hallway, a garage interior or a shop counter are “complete record” places: put a plug-in camera there and let it run. A back fence, a side gate, a driveway you can see from the kitchen are “alert” places: a battery camera that wakes for motion and records to local storage — the eufyCam S330 below, or the Reolink Argus PT Ultra — is the right tool, and you will never charge the eufy if its panel gets eufy’s stated two hours of daily sun.

The mix is the point. Nobody needs every camera recording all night, and nobody should accept a camera that records nothing without a monthly bill. Our guides to how many cameras you need and where to put them turn that into a plan, and do security cameras need Wi-Fi? covers what each type does when the connection drops — which, for a camera recording to its own card, is nothing at all.