I have not installed these lamps where I plan to but I have built a test board and switch, everything works fine and corresponds to the description. Thermal synchronizers seem to dissipate a decent amount of heat given the space. A fairly bright white light is emitted. Didn't try dimming as I wasn't planning on using that feature at the time.
Lamp LED Xiaomi Mi Smart LED Bulb Essential (MJDPL01YL), E27, 9 W, 6500 K
113 Review
Lamp LED Xiaomi Mi Smart LED Bulb Warm White (XMBGDP01YLK), E27, 8 W, 2700 K
26 Review
Ceiling lamp Yeelight YLXD013-B, 50 W, number of lamps: 1 pcs., color: white
62 Review
Smart bulb Yandex with Alice, base E27, 8 W, RGB color
76 Review