Compatible with Amazon Alexa and Assistant for voice control. Control lights and appliances connected to the smart switch on or off wherever you have Internet from your smartphone or tablet by app. Compatible with Android 4.1 or higher & iOS8 or higher. Schedule the intelligent Wi-Fi light switch to automatically power electronics on and off based on specific time you set. Easy installation and convenient for home or office use. Product Type: Smart Lamp Base Holder Input / output: 100-240V AC; 50/60Hz Rated current: 10/16A Wifi frequency: 2.4GHz; 802.11b/g/n Port: E27 Quantity: 1pcs/2pcs/3pcs Working temperature: -20Celsius~60Celsius Max. load: 40W Item weight: 69g / 2.43oz colour:white Material:PC Package Contents: 1 * Bulb socket adapter/3* Bulb socket adapter/2* Bulb socket adapter Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.