Expanding Zigbee Network to the Garden

Hi everyone, I’ve recently expanded my home automation system and I’m running into an issue with my Zigbee network coverage. I’ve got a Raspberry Pi 5 with Z2M and a Sonoff Zigbee 3.0 USB Dongle installed, which works great for covering the house. However, I’d love to extend this network to my garden, which is about 80 meters away from the house.

I’ve tried using a second Z2M instance on the Raspberry Pi, but it only works alternately with the first one. I came across a Reddit post suggesting using a SLZB-06 with PoE, but the user didn’t go into much detail about their setup. I’m wondering if anyone has successfully extended their Zigbee network over LAN or if there’s another method I could try.

I’ve considered using repeaters, but the distance between the house and the garden makes it impractical to place one in the middle. Any advice or tips would be greatly appreciated! I’m really hoping to get my garden sensors and lights connected without having to resort to traditional repeaters. Thanks in advance for your help!