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.

There are three points to note about the backup batteries:

  • They are obviously intended to cover periods of mains outage but their role is limited backing up memory, ie to receiving and saving data. The batteries do not allow the WLL unit to run normal uploads, but uploads should start catching up once mains pwoer is restored;
  • The batteries allow data to be saved for later upload to as and when power and network connectivity are restored;
  • The batteries also play a key role in retaining certain stored parameters such as monthly and annual rainfall totals, which are stored locally rather than centrally at If power to a WLL unit is completely lost then these totals will also be lost leading to discrepancies in the data records. The annual total figure can be reset, but it is obviously better to avoid power being lost by installing the backup batteries.

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 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.

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.

Data access

Access to data generated by a WLL unit is limited for now to viewing and managing the data via a account. There is currently no facility to use programmatic data downloads either directly from a WLL device or from a WLL’s account. Davis advise that a new WLL API will be published, potentially in 2019 Q3.

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.

Unfortunately there is also no obvious way to ascertain which firmware version or date a particular WLL unit is loaded with. Hopefully this oversight by Davis might be fixed before long so that a WLL unit can be checked to see if a particular new feature is available or a specific bug has been fixed.

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: Oct 02, 2019


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