How Do I Choose the Right Storage Capacity for an SD Card in My Security Camera?

Not all SD cards are built for security cameras. Here are the key factors to consider:

1. Storage Capacity

SD cards come in different capacities, typically ranging from 16GB to 512GB. The ideal size depends on your camera’s resolution and recording settings.

2. Speed Class

For smooth video recording, you need an SD card with the right speed rating. Look for:

Class 10 or UHS-I (U1/U3) – Ensures at least 10MB/s write speed for Full HD recording.
V30 or higher – Recommended for 4K security cameras to prevent dropped frames.

3. High-Endurance Rating

Security cameras continuously write and overwrite data, which can wear out a standard SD card quickly. Choose a high-endurance SD card designed for 24/7 recording. These are rated for thousands of hours of continuous video writing.

4. Weatherproof & Durable

Outdoor cameras require SD cards that withstand extreme conditions. Look for:

Waterproof (IPX7 or higher)
Temperature-resistant (-25°C to 85°C)
Shockproof & X-ray proof