What the LED colours mean

The LED of your device tells you if the device waits for the WiFi details or if it is connected to the internet. The meaning is different between models.

By model

The models are grouped as in the Select your device model list of the app.

Model	Setup mode	Connected to the internet
HAM ThermoSense, HAM HumiSense, HAM Relay, HAM Sense	The green LED blinks.	The green LED stays on.
HAM DinSwitch, HAM DinSwitchM and other DIN rail devices (Din devices)	The LED blinks.	The green LED stays on.
HAM DinMeter3P	The green LED blinks.	The red LED (WiFi) and the green LED (cloud) stay on. If the red LED is on and the green LED is off, the router or a firewall blocks the connection.
HAM RemoteAC	The green LED blinks.	The blue LED (disconnected) goes off and the green LED stays on.
HAM Thermostat, HAM IAQSense	The WiFi icon on the screen blinks.	The connection icon stays steady.
HAM Plug, HAM DualSwitch	The LED blinks.	The blue LED goes off.

For models that are not in the list, see the Installation section on the device page, in the device catalogue.

After the WiFi send

At the end of the setup wizard, the app asks what The green LED is doing. Your answer shows the cause of the problem.

Answer	What it means	What to do
fully on	The device is connected to the internet.	Tap Claim device.
fully off	The device received the WiFi details, but it cannot connect to the internet.	Check the WiFi name and password and try again. See The WiFi connection fails.
blinking	The device did not receive the WiFi details. It is still in setup mode.	Tap Send again. It usually works the second time. If not, see Connect through the device hotspot.

HAM RemoteAC, HAM Plug and HAM DualSwitch

The question in the app always says the green LED. On these models, the connection shows when the blue LED goes off. If the blue LED goes off, the device is connected and you can claim it. See Claim a device with its Device Key.

On the HAM RemoteAC, the blue LED is the disconnected LED. If it stays on after the send, the device did not connect. Do these checks:

• Check the WiFi password.
• Check that the network is 2.4 GHz.
• Check that the network rules allow the device. See Network requirements (for IT).

The LED is correct, but the app shows offline

The device reaches the WiFi, but it does not reach the HAM servers, or it is not claimed on your account.

• Check that you claimed the device. See Claim a device with its Device Key.
• If the network has a firewall, give your network administrator the page Network requirements (for IT).
• See The device shows as offline.

GPS trackers

GPS trackers have two LEDs: Navigate for GPS and Status for operation. When both blink about once per second, the installation is correct. See Install a GPS tracker in a vehicle.