SONOFF B02-BL is a Wi-Fi Smart LED Bulb Support APP control, voice control and Scene mode. Provide comfortable lighting with saving energy. Available in A19&A60, warm & cold or RGBCW model to decorate your space as your preferences. Energy Star and Energy-Related Products certified. Compared with traditional bulbs, it and has longer rated lifetime and helps you save more electricity costs. Easily adjust the brightness and color temperature to keep you in a comfortable environment. You can control the light in eWeLink APP. Variety colors create an ideal room atmosphere. In the LAN, your smartphone MIC will recognize the music and up to 10 bulbs can change the colours with music rhythm, integrating the music into lightings, make you feel it is an immersive conner. More automated actions. Set tasks for your lights in different time. Control the light with your voice through Alexa and Google Assistant. Add a smart scene. When the door is opened, the light is turned on automatically. Manage all lights by group-control. Lightening your home and decorating your life. DIY mode is available to SONOFF smart LED Bulb. You can send a post to turn on/off the bulb and adjust its colour temperature or colour via HTTP API. The universal Edison screw cap meets your various needs wherever you are.