Signal Strengths

The Blink system relies on having good signal strengths for optimal performance of Live View feeds, uploading motion clips, and sending alerts. To avoid performance issues, it is critical for the Sync Module and each camera to show 3 bars of connectivity.

Sync Module

The Sync Module receives information from the Blink servers through your local Wi-Fi, and sends commands to system devices with a Low Frequency Radio (LFR). Cameras receive information from the Sync Module, then send images and notifications through your local Wi-Fi. For optimal performance, your camera must show three bars of signal strength from your Sync Module in addition to the three bars of signal strength to Wi-Fi. 

Obstacles and distance reduce signal strength. Putting your Sync Module behind dense building materials such as brick, stone, concrete, steel, and aluminum can interfere with signal strength. Some examples of a poor location are behind a television, inside a basement or attic or on top of your wireless router. Click here to learn more about trouble shooting connectivity issues.

We recommend positioning your Sync Module in a central location, where it can receive equally good signals from your Wi-Fi router and your cameras. In some instances, you may need re-locate your camera.

Sync Module Range

Assuming standard construction techniques (single building, no unusually dense construction materials) the Sync Module should be able to communicate with Blink cameras up to (and perhaps over) 100’ away in any direction. We also recommend keeping the Sync Module near your wireless router for best signal strength. The goal is to have 'three bars' of signal connectivity at the Sync Module and each camera as depicted on the Sync Module screen in the Blink app.


As stated, it is critical for the system to have 3 bars of signal strength. Anything less can exhibit intermittent issues with the performance of your system. Its important to note that the cameras utilize two types of signals for communication:

  • LFR - a.k.a "Low Frequency Radio", is the signal that cameras share with the Sync Module
  • Wi-Fi (2.4 GHz) - is the signal that the cameras share with your wireless router

Obstacles and distance are the biggest contributors to poor signals. Weak signal to your Sync Module can result in missed or delayed actions when attempting to view your cameras, and poor Wi-Fi will result in failed motion clips and rapid battery drain.

Note: Mini cameras do not rely upon Sync Modules to function. The main consideration; therefore, is the distance the Mini is placed from your Wi-Fi router.

Where to find Signal Strengths

For your Sync Module, navigate to your Blink App home screen and tap its icon. This will present the Sync Module menu which immediately shows you it's signal strength.

Sync Module menu

For your cameras, tap the camera settings icon three lined icon next to your camera's nickname. This will present the Camera Settings screen. Scroll down and tap the "Update" button to pull the latest readings for both the Camera to Sync Module and Wi-Fi categories.

camera settings page

The same button appears in the Mini camera settings and refreshes only Wi-Fi signal strength as it does not require a Sync Module.

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