APP & WIRELESS REMOTEWith the eWeLink App, devices can be controlled anywhere with one click via your iOS or Android smartphone. You can also control it with the 433Mhz wireless remote control (remote control not included).1-3 key smart switch can control three lights independently. Automatic Control TimerBy presetting timers or schedules in the eWeLink app, the switch can be automatically turned on/off at a specified time. Smart SceneYou can create smart scenes for one device to turn on and off another, or group multiple devices into a group that can be used together. Voice ControlWiFi Switch (3 Key Switch) is compatible with Amazon Alexa (Amazon Echo/Echo Dot/Amazon Tap) and Google Home Assistant. NOTE1. Please turn off the power before installing the device. 2. A neutral cable is required for this device. 3. The router must be a 2.4GHz device (5.0GHz WiFi is not supported), but there is no limitation for the smartphone network (2G/3G/4G/WiFi networks are all compatible). Switch, RF Bracket - [Control with 3 methods] Turn on or off your light as you want with the RM433 remote control or your smartphone or Alexa & Google Assistant. - [1% - 100% dimming] Adjust the desired brightness via the smooth touch dimming area in the APP or with your voice control - Increase/decrease the brightness level of the light for a pleasant atmosphere. The brightness memory function remembers the last setting of the lighting when switching off and turns it on again when switching on. - [Home Automation System] Compatible with Alexa and Google Home voice control, 433MHz RF control, remote control anywhere (eWeLink APP on iOS and Android), smart scene, calendar and dimmer sharing with family members, no hub needed. - [4-level brightness] Adjustable in 4 lighting levels on the RM433 remote control, adjustable to the highest and lowest brightness level in the eWeLink app. - [Dimmable] For use with dimmable LEDs up to 150W or bulbs up to 200W