No need for Hue Bridge anymore.
It should be possible to connect them to any Zigbee Gateway:
push the Button 1
push Button 3 for 10 secs
push buttons 2 & 3 together
push button 1 again
Now it should be found by any Zigbee Gateway.
Confirmed working with Senic + Gira Friends of Hue Switch, a Sonoff Gateway flashed to Tasmota and HASSIO with zigbee2mqtt addon.
No need for Hue Bridge anymore. It should be possible to connect them to any Zigbee Gateway:
Now it should be found by any Zigbee Gateway. Confirmed working with Senic + Gira Friends of Hue Switch, a Sonoff Gateway flashed to Tasmota and HASSIO with zigbee2mqtt addon.