Features: *APP Remote Control: Dim light for peace of restful sleep. Develop night-time fears at bedtime? Just stop your bedroom light on the right light level on eWeLink APP. *RF 433Mhz Remote Control: Even easier dimming at hand, turn the light down casually with the RF 433Mhz remote controller at the thrilling movie night, or on/off the light, enjoy an immersing moment. *4-level Brightness Change As Your Mood: Adjustable in 4 lighting levels on the RF 433Mhz remote controller, customizable in the highest and lowest brightness level on the eWeLink APP. Get all your needs covered. *Set the Brightness for the Preset Time: Create the specific scedule and brightness level on smart scene mode for any occasions throughout the day. *Sunrise & Sunset Mode: Keep track of the sun rise and set time of your location, so you can create a scene that activates at a fixed time, when the sun rises or when the sun sets. *Adjust Party Ambience with Your Voice: Turn up/down the brightness level light with your voice command for a great atmosphere via Amazon Alexa & Google Home. *Applicable Lights: Support to dim incandescent light bulbs and dimmable LED light. Specifications: Model: D1 Product type: Smart Dimmer Switch Max current: 1A Input: 100-240V AC 50/60HZ Output: 100-240V AC 50/60HZ Incandescent bulb: 200W Dimmable LED: 150W RF Band: 433.92MHz WI-FI: IEEE 802.11 b/g/n 2.4GHZ Enclosure Material: PC V0 Item Size: 86 * 86 * 15.8mm Package Size: Approach. 11*11*5cm/4.3*4.3*2in Package Weight: Approach. 180g/6.3oz Package List: 1 * SONOFF D1 Wifi Smart Dimmer Switch