Hi,
I've got 2 x Yeelight Arwen Ceiling Light 550S but found that this model is missing from the list.
Each light has 2 light, one is white with different colour temperature and selectable level, the second one is RGB ambient light with selectable level. It's WIFI light with LAN control enabled.
I've added them to Hubitat but the support is very limited, e.g. on/off is working, I'm happy to add missing functionality myself but could not find any source code for the in-built drivers.
See some details below:
EC4D3E74B539={deviceAddress=d893, name=, location=yeelight://192.168.0.198:55443, model=ceilb, id=0x000000001c430f43, networkAddress=C0A800C6, support=get_prop set_default set_power toggle set_bright set_scene cron_add cron_get cron_del start_cf stop_cf set_adjust adjust_bright set_name set_ct_abx adjust_ct bg_set_rgb bg_set_hsv bg_set_ct_abx bg_start_cf bg_stop_cf set_scene_bundle bg_set_default bg_set_power bg_set_bright bg_set_adjust bg_adjust_bright bg_adjust_color bg_adjust_ct bg_toggle dev_toggle, mac=EC4D3E74B539}