2.4GHz vs 5GHz Wi-Fi

Some security cameras (like CB54 and CB70w) support both 2.4GHz and 5GHz Wi-Fi—two common wireless frequency bands that differ significantly in performance and use cases.

  • Switch to 2.4GHz if your camera goes offline.
  • Use 2.4GHz for Stability when far from the router or with obstacles (walls, windows, etc.) in the way.
  • Use 5GHz for Speed when close to the router and watching high-definition footage.
  • If possible, test your signal strength in the camera app to determine the best frequency for your environment. For cameras in the O-KAM Pro app, you can test Wi-Fi connections in "Device Health".

Here’s a breakdown of the key differences between 2.4GHz and 5GHz Wi-Fi:

1. Coverage and Wall-Penetration

2.4GHz Wi-Fi

  • Wider Coverage: With longer wavelengths, signals travel further and are ideal for larger areas.
  • Better Penetration: More effective at passing through walls and obstacles—suitable for multi-story homes and complex environments.

5GHz Wi-Fi

  • Smaller Coverage: Shorter wavelengths lead to faster signal attenuation, resulting in a coverage area roughly 30–50% smaller than 2.4GHz.
  • Weaker Penetration: More easily blocked by obstacles, so it works best when the camera is closer to the router or when a repeater is used.

2. Data Transmission Speed

2.4GHz Wi-Fi

  • Slower Speeds: Theoretical maximum speeds range from about 150 to 600Mbps—often lower in practice due to interference.
  • Narrower Bandwidth: Limited channels (typically only 3 non-overlapping channels) which can lead to congestion.

5GHz Wi-Fi

  • Faster Speeds: Capable of speeds over 1Gbps, making it ideal for high-definition video streams (such as 4K or 5MP cameras).
  • Wider Bandwidth: More channels available (around 24 non-overlapping channels) result in lower interference and reduced latency.

3. Interference Resistance

2.4GHz Wi-Fi

  • More Interference: Shares its band with Bluetooth devices, microwaves, and older routers, which can cause connectivity issues.

5GHz Wi-Fi

  • Less Interference: With fewer devices operating in this band and cleaner channels, it provides a more stable connection in dense areas like apartment buildings.

4. Suitable Scenarios

Choose 2.4GHz if:

  • The camera is far from the router or separated by multiple walls.
  • You’re operating under lower resolution requirements where real-time performance isn’t critical.
  • The surrounding environment experiences minimal 2.4GHz interference (for example, in rural areas).

Choose 5GHz if:

  • You need high-definition video (such as 4K or smart analysis) or low latency.
  • The camera is close to the router with few obstacles.
  • You are in a device-dense environment (such as urban areas) where reduced channel competition is beneficial.

5. Additional Considerations

  • Dual-Band Routers: Modern security cameras often support both 2.4GHz and 5GHz, automatically switching based on the environment.
  • Compatibility: Some cameras may only support 2.4GHz, so be sure to check your camera’s specifications.
  • Power Consumption: Although 5GHz may consume slightly more power, its impact on camera performance is generally minimal.