This topic covers notes on the 6100 Weatherlink Live (WLL) unit released by Davis in April 2019.

Given that WLL is a completely new product and significantly different from previous hardware units in the Davis Weatherlink range, these notes are limited as yet but will be updated as new information become available.


Initial set-up

This requires a Bluetooth connection to the WLL unit from a smartphone or tablet running the Weatherlink app v2.0.16 or later. This appears to be the only method for setting up WLL since the WLL unit does not seem to expose a web interface, at least not at any easily-discoverable URL. (Of course Davis may provide more details of how to access an interface at a later date.)

The Bluetooth connection can be reactivated at any time to make basic changes to the WLL’s configuration, eg to change from WiFi to cabled Ethernet connectivity. To make the BT connection, the blue LED on the WLL may need to be flashing. If this cannot be seen then there is a sensitive area/pad in the recess above the LED – touching this with a fingertip should start the LED and allow a BT connection.

The backup batteries are obviously intended to cover periods of mains outage but their role is limited to backing up memory, ie to receiving and saving/queuing sensor data. The batteries do not allow the WLL unit to run normal uploads to, but the uploads should start catching up once mains power is restored;

Account/Device configuration

Remember that several aspects of your WLL device can be configured via the device’s account and not necessarily on the device directly. So things like archive interval, calibration for the internal temperature/humidity/pressure sensors etc are all made via the Device | Device Configuration | Edit Settings option on your account (that’s Edit Settings for the WLL device itself at the top of the page, not the ones for individual transmitters).

Be aware that the shortest archive interval you can set on the free (Basic) plan at is 15 minutes (though longer intervals can be freely set). Archive intervals of 5 minutes or 1 minute require a Pro or Pro+ subscription respectively. (NB This point is largely moot since free plans cannot access their archive data. However, archive data is actually stored by all accounts – it’s simply not accessible to users on free accounts. If a user subsequently upgrades to a Pro plan then they should discover that they now have access to all of their past data.)

Calibration and other settings (eg rain gauge increment and annual rainfall to date for newly installed gauges) for sensors attached to individual transmitters are made via the Edit button within each transmitter’s ID box on the Device | Device Configuration page. You will often need to click through the Advanced Settings button to access all of the settings.

Rebooting the Weatherlink Live unit

It should not normally be necessary to reboot the WLL unit. However, there are occasional circumstances when a reset of the WLL is required to reinitialise the unit and thereby to allow certain features to be reset or updated. Rebooting is achieved by removing mains power and also one backup battery for a few seconds before repowering. In general, rebooting should not be necessary at all unless it is specifically requested that you do so by Davis support to fix a particular issue. Rebooting will cause any data that has not been uploaded to to be lost and so it should certainly not be performed if there has been any power or Internet outage until the uploads have had time to catch up fully.

Data access by other devices/programs

Access to data generated by a WLL unit is is available via the WLL API..Further information is available under a separate data access topic.

WLL Firmware

The WLL unit’s operation is obviously controlled by software installed into the unit – firmware in other words. The firmware is designed to be upgradeable but this is done automatically from and cannot be controlled by the user. In other words, WLL firmware is pushed from There is no known way for users to download firmware updates and to install them locally. What process at controls the firmware updates is not disclosed at present. The administrator can command an update to a specific WLL device, but presumably there is also an automatic bulk update mechanism, though how and when this operates is not clear.

Initially, it was not possible to see which firmware version or date a particular WLL unit was loaded with. But this information is now available as part of the Health Data screen on

Interacting with WLL

Anyone wishing to experiment with accessing data from a WLL unit may prefer to connect it via a cabled Ethernet connection – in this way the WLL’s IP address may well be found more easily by using a network scanner like AngryIP. (Mixed cabled/WiFi networks with WLL using its WiFi connection may hide the WLL’s IP address.)

Last modified: Jul 03, 2020


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