You can join Phillips hue units to your own zigbee network without Internet or even the Phillips hue app.
Zigbee2mqtt and a cheap zigbee dongle is all you need really. You could add home assistant for a better interface but there is no need to involve Phillips or the Internet. One of the huge advantages of zigbee imo.
Zigbee2mqtt and a cheap zigbee dongle is all you need really. You could add home assistant for a better interface but there is no need to involve Phillips or the Internet. One of the huge advantages of zigbee imo.