1. Neutral wire is required;
2. It works with dimmable led bulb only, If light bulb is non-dimmable led bulb or Incandescent bulb, only timing on/off function,can't adjust light brightness through the wifi and button.Please make sure your bulb is LED Dimmable bulb.

Speciffication:
Type: WIFI Dimmer Switch
Color: Black / White
Rated Voltage: AC100V-240V, 50/60Hz.
Max. Current: 10A
Max. Load: 400W
Wireless: 802.11 b/g/n 2.4G
Security mechanism: WPA-PSK/WPA2-PSK
APP: Tuya /Smart Life
Material: ABS + Tempered Glass
Switch: EU Standard
Certification: CE, RoHS, FCC

Features:
【Remote Control】 The user can use a smartphone to remotely control the home electronics remotely anytime, anywhere as long as the phone has 2G / 3G / WIFI network compatible with iOS and Android operating system with Smart Life and Tuya app

【Voice Control】Compatible with Amazon Alexa (Echo / Dot / Dot / Tap), Google Assistant, IFTTT. Flight ticket counter with Amazon Alexa or Google Home to turn your switch on or off dim with your voice, No hub required

【TIMING】The intelligent timer switch will automatically turn on after setting a timer for this switch, which is essential for daily scheduling, and bring you a comfortable and intelligent lifestyle

Know about Tuya APP
Step 1: Search "Tuya" or "Smart Life "on Phone to download it.
Step 2: Connect the bulb to your local 2.4G WIFI with your phone connecting to it.
Step 3: Set up your Tuya account. Add Device and confirm the device in the App.

Tips--App
Be sure that you are using 2.4GHz WiFi when connecting with the smart bulb. And WiFi must be detectable status. Many routers have 5 GHz and 2.4 GHz network and your phone will always automatically connect to the 5 GHz network. So, you have to completely turn off your 5 GHz network by going to your router settings (enter the router IP address into your internet browser, usually something like 192.168.1.1), forcing your phone to connect to the 2.4 GHz network.

In addition, the router encryption mode must be WPA2-PSK type and the authentication type must be AES

Package include：1 * Dimmer Switch