Reading Controller lights
The Controller has a strip of small status lights visible through the clear lid of the enclosure. All of the lights act as a single indicator — they show the same color at the same time, used as one bright signal rather than as a row of meaning. The color and motion tell you what the Controller is doing.
What you will see
Section titled “What you will see”| State | Color and motion | Meaning |
|---|---|---|
| Booting up | Solid white | The Controller has just powered on and is initializing. Lasts a few seconds. |
| Searching for cellular signal | Solid cyan | The cellular modem is on the air looking for a tower. |
| Connecting to the cloud | Solid blue → solid yellow → solid orange | A short stepped sequence as the Controller registers with the network and opens its session to the cloud. Each color holds for a few seconds. |
| Online and healthy | Solid green | The Controller is provisioned, connected, and operational. This is the resting state. |
| Fault | Slow pulsing red (sinusoidal, ~1.5 second period) | An unrecoverable problem. The Controller could not finish provisioning, lost something critical, or hit a hardware fault. Contact support. |
On a first power-on, you should see the boot-and-connect sequence walk through white, cyan, blue, yellow, orange in roughly 30 to 90 seconds and then settle on solid green. If the lights stick on any one color for more than a few minutes, the Controller is having trouble at that step — most often, it’s cellular signal at the cyan-or-blue step.
What “solid green” actually means
Section titled “What “solid green” actually means”Solid green is the Controller’s resting state. It means the Controller has power, has a cellular signal, has completed provisioning, and has published its first shadow update to the cloud. It does not mean the cellular modem is actively talking to the cloud at every moment — the Controller connects on demand, opening a session only when there is something to report.
You should expect long stretches where the Controller sits at solid green and the modem is idle. That is normal. The next door event or sensor reading will trigger the Controller to open a session.
When the lights go dark
Section titled “When the lights go dark”The Controller’s status lights are visible through the clear lid whenever the Controller has power. If the lights are completely dark and the unit feels cold to the touch, the Controller has lost power. See Controller offline.
Last updated: 2026-05-14.