Smart white four-key lighting switch

Smart lighting key can be controlled from the Smart Life app or using voice commands from Amazon Alexa device and Google Assistant. There may be a slight difference in the product shape from the appearance in the picture. Features: Ability to turn on or off the bulbs remotely to save energy. Ability to set a timer to turn on or off the bulbs after a specified time. Ability to grant control permissions to all family members. Can work with or without a neutral wire using a capacitor. Methods of control: via mobile phone through the Smart Life app. via voice commands through Amazon Alexa device or app. via voice commands through Google Assistant device or app. Electrical specifications: operates on 110V and 220V. Supports 300W for LED light switches, and 1000W for other types. Other specifications: for indoor use only. withstands temperatures from -10°C to 40°C. Product dimensions: 86 * 86 * 35 mm. Supports Wi-Fi frequency 2.4GHz only. Supports IOS and Android systems. Product contents: smart light switch. 2× screws. capacitor. instruction manual (in English). 24-month warranty.