Connectivity metric
Signal strength
RSSI · 2.4 GHz WiFi
Signal strength measures the quality of the WiFi radio signal reaching your LIFX device at its installed location, reported as RSSI (Received Signal Strength Indicator). The stronger the signal, the more reliably your device communicates with your router and the faster it responds to commands.
Status levels
Strong RSSI better than -70 dBm. Optimal, reliable performance is above -60 dBm. | Fair RSSI -70 to -79 dBm. Adequate for most use, minor delays possible. | Weak RSSI below -80 dBm. Commands may fail or be delayed. |
How to improve signal strength
1 | Move your WiFi router closer to the device, or relocate the device if it's on a lamp or fitting that can be moved. |
2 | Remove physical obstructions between your router and the device. Thick concrete walls, large metal appliances, and fish tanks all significantly attenuate 2.4 GHz signals. |
3 | Restart your router and LIFX device, then check if the signal reading improves in the app. |
4 | Check other devices in the same area. If they also show poor signal, the issue is general coverage rather than the LIFX device itself. |
5 | Use a Wi-Fi mesh network to improve coverage in the affected area. Placing a mesh node in the same room as your LIFX devices gives the best results. |
6 | Ensure your router's antennas are positioned vertically to maximize horizontal signal spread. |
When to contact support
| → | Your device shows Strong signal but still doesn't respond reliably |
| → | Signal reads Weak even when the device is within a few feet of the router |
| → | You've worked through all steps above and the reading hasn't improved |