Smart Garden Tap Water - On and Off

Apologies for jumping in, but I am after a smart sprinkler (I just posted a little while ago here) and during my searching I found the Link-Tap water timers.

Has anyone had any success with pairing their Link-Tap water timers with a Home Assistant Zigbee gateway and so it becomes the part of the Home Assistant Zigbee network, or must we use the additional Link-Tap gateway?

I saw that they have the some limited data on using it with MQTT, but that seems to go via their gateway if I am not mistaken.

Any help or additional info would be appreciated.

Mike