MicroSD Card for Security Camera

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Choosing MicroSD Card for Security Cameras

Micro SD cards are used in all sorts of applications from smartphones to drones. Each application demands a variety of abilities from the memory card it uses. For example, photography cameras require both high-performance and high-endurance memory cards. When it comes to security cameras, there are three micro SD card features that matter: capacity, speed, and durability.

Different Brands

There are many brands on the market selling MicroSD cards for security cameras, most common reason is to store memory for playbacks or keeping evidence of any incidents. Brands such as Strontium or Alhua, with such gap of difference and comparing the benefits and capability of the products.


SD Cards


Getting the best memory card for your camera can be a challenging prospect. Different cameras have different data and compatibility needs, and there are many different brands out there competing for your attention. Which one to choose?

The general design of the memory card hasn’t changed all that much over the years. Secure Digital cards, much more commonly known as SD cards, have been around for more than two decades, and these have spawned the micro SD version that’s found in smartphones and tablets. The big advances in the technology have all been internal, with newer cards being able to process more and more data at much faster speeds. This is a necessary step while cameras continue to get faster and more high-quality. The card needs to be able to keep up with the data the camera is producing.



Memory cards come in all sizes in terms of capacity. There are 16GB memory cards, 32GB, 64GB, 128GB, and even 256GB. So how do you choose the right one for you?

First, check your camera’s specifications. Some cameras have a limit on what size of memory cards they support.

Second, determine how much storage space you need based on how you plan to use your security camera. If you set up your camera to record continuously, you should use a high-capacity memory card. But if you’ll only use the memory card as a backup storage device, you can settle for one with a lower capacity.

Finally, factor in your camera’s resolution. High-resolution videos take up more storage space, so if your camera’s resolution is 1080p or 4K, use a micro SD card with a larger capacity.


Speed is another factor. The speed rating of memory cards is based on their read/write speed. However, in security camera applications, only the write speed matters.

The write speed is the rate at which a memory card writes data (video) to its memory. If you use a slow micro SD card, it might cause recorded videos to skip frames or become laggy.

We suggest that you base your decision on your camera’s resolution. Cameras with a higher resolution require microSD cards with higher write speeds.


Memory cards need to be durable because they too are subjected to harsh conditions. For example, prolonged use of continuous recording might eventually damage the memory card. Some cameras also have magnets, which isn’t good for most micro SD cards. Memory cards must also be resistant to water and high temperatures, especially if used on outdoor security cameras.

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Protecting Your Work

Apart from capacity and speed, data protection is a concern. A lot of cards feature Error Correction Code (ECC), which enhances reliability by automatically detecting and fixing transfer errors. This is a great asset in any application, but would be especially important in situations in which you have to work quickly and deliver results in a very short time, such as professional sporting events or news coverage. When you need to upload or send files so that your work can be seen by the world before your competitors’, having a reliable card with a small chance of failure or errors is critical.


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MicroSD card for security camera buying guide

Before you buy a card, check the maximum size that your device can accept. Dash cams are particularly limited – most will take up to 32GB, the limit of the SDHC standard – but most phones will support up to 256GB, with some up to a massive 2TB.

It can be confusing to choose a card as there are so many standards and logos. Some markings refer to speed, others to capacity. Here’s how to figure them out. The newest standards are ‘V’ and ‘A’, and you’ll see a number after each which represents a minimum standard of performance.

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Can I use a memory card from one camera to another?

It could cause issues down the road as it’s not a good idea to pull a memory card out of one camera model and putting it into another without formatting.

How do I transfer pictures from my Micro SD card to my computer?

Connect the micro SD card reader to your computer. You can plug some readers directly into a free USB port on your PC, while for others you need to use a USB cable to make the connection. Plug the micro SD card into the card reader, then the computer will detect the device and assigns a drive to it.