SONOFF Slampher R2 ITEAD Intelligent Light Bulb Holder 433MHz RF&WiFi Home Bulb Base Compatible with Home/Nest & Alexa Voice Control Note: If you want to control the device by remote controller indoors, you need to buy an additional 433MHz RF remote controller. It is a 433MHz RF controlled & WiFi intelligent bulb holder that can connect to light bulbs with E27 screw base. The intelligent bulb holder can be remotely controlled through the eWeLink app via smartphones. Enjoy your smart lifestyle. Features: Control your smart home together with your family. Compatible with Home/Nest and Alexa. App support: Free iOS and Android mobile app eWeLink. Provides real-time device status to the app. Remote ON/OFF: Turn electrical devices on or off from anywhere at any time. Supports control via 433MHz RF remote controller. Supports up to 8 scheduled, countdown, or loop timing tasks to turn on/off at specified times. Turn on or off multiple devices with one tap. Trigger on/off based on temperature or other environmental conditions. Supports managing multiple WiFi smart switches with one smartphone. Specifications: Item type: Light Bulb Holder Screw Size: E27 Input: AC 100-240V 50/60Hz Output: AC 100-240V 50/60Hz Max. Current: 2A Max. Power: 450W RF: 433 MHz Wireless Standard: 802.11 b/g/n (2.4GHz) Security Mechanism: WPA-PSK/WPA2-PSK Mobile Phone Compatibility: Android & iOS Gang: 1 Enclosure Material: Fire-retardant ABS V0 Humidity: 5%-90%RH, Non-condensing Operating Temperature: 0°C-40°C (32°F-104°F) Item Size: Approx. 100*68*32mm Package Weight: 110g / 3.88oz Package Size: 104*71*71mm / 4.09*2.79*2.79inches Package List: 1 x Light Bulb Holder