Wifi Smart bulb power led lamp light wifi Remote Control RGBW or WW/CW Motion or Color Temperature Sensor LED Bulb 

LED Bulb Light Lamp E27 E26 B22 E14 4W 5W 6W 9W Wifi Remote Control Smart Home Lighting Sensor RGBW or WW/CW 
RGBW LED bulbs can be controlled by remote control within 30 meters distance,One remote control can control 4-group led bulbs,one remote can control thousands of LED bulbs at the same time in each group,2.4GHz RF wireless signal(2.4G RF remote or smartphone) will work through any walls at home, it has memory functions, you just need set it  the first time you use.