Link/Activity LED

The color and light pattern of the Link/Act (Activity) LED indicate the state of the device as described in the following Table.

LED
State	Description
Off	The device is powered off or the Wi-Fi has been disabled via the Mode button configuration or via an `IPNetPower()` instruction from the data logger. See Mode button for information on the Mode button configuration.
On solid	After power-up: scanning nearby networks and trying to join or create a Wi-Fi network. The LED turns solid green when joining a network and solid amber when creating a network.
Flashing	After successfully joining or creating a network, the LED will flash with network activity. Note that the LED may only flash once every few seconds on the created network or networks that are not very busy.
Red double‑flash	If the device is unsuccessful at joining or creating a network, the LED will periodically double-flash red. The device will attempt to connect to the network again after approximately one minute.
Fast red and green flash	OS Download in progress – DO NOT DISCONNECT POWER