Blink cameras rely on the Sync Module to communicate with Blink servers and your WiFi network. When your cameras show as offline or the Sync Module cannot connect, you will not receive motion alerts or be able to view live video. This guide covers the most common causes and solutions.
Common Causes
- WiFi password changed - The Sync Module needs to be updated with new credentials
- Weak WiFi signal - Cameras need at least 3 bars for reliable operation
- Power interruption - Brief outages can disconnect the Sync Module
- Network interference - Other devices like Echo Dots can cause conflicts
- Band steering issues - Combined 2.4GHz/5GHz networks can confuse the module
- Router firmware changes - Updates to your router can affect connectivity
How to Fix It
Step 1: Check the LED Status
Look at the Sync Module LED indicators:
- Solid blue + blinking green - Module is offline and trying to reconnect
- Blinking blue + solid green - Ready for setup
- Solid blue + solid green - Connected and working normally
Step 2: Power Cycle the Sync Module
- Disconnect the Sync Module from power
- Wait 10 seconds
- Plug it back in
- Wait for it to reconnect (may take 1-2 minutes)
Step 3: Restart Your Router
- Unplug your router from power
- Wait 30 seconds
- Plug it back in
- Wait for the network to fully restart
- Check if the Sync Module reconnects
Step 4: Check WiFi Signal Strength
Blink cameras need at least 3 bars of WiFi signal for reliable operation. If signal is weak at your camera locations:
- Move the Sync Module closer to cameras
- Add a WiFi extender in a better location
- Position the Sync Module away from interference sources
Step 5: Simplify Your Network
If you have mesh pods or extenders:
- Temporarily disconnect all mesh pods and extenders
- Leave only your main router powered on
- Try to reconnect the Sync Module
- Once connected, reconnect your mesh devices one at a time
Step 6: Update WiFi Credentials
If your WiFi password changed, you need to update the Sync Module:
- Open the Blink app
- Go to Sync Module settings
- Select Change Wi-Fi Network
- Follow the prompts to enter your new password
Step 7: Factory Reset (Last Resort)
If nothing else works, factory reset the Sync Module:
- Find the reset button on the Sync Module
- Press and hold until the LED turns red
- Release and wait for the module to reset
- Set up the Sync Module as new in the Blink app
- Re-add your cameras to the system
Individual Camera Offline
If only one camera is offline while others work:
- Check the camera battery level
- Verify the camera has good signal to the Sync Module
- Power cycle the camera by removing and reinserting batteries
- Delete and re-add the camera in the Blink app if needed