After setting state synchronization, the two on/off positions are fixed and synchronized with other switches. (Note: This function is only applicable to the rocker switch.)Self-reset Switch& Dimming Fade Time Setting: You can long-press the self-reset switch within the set time, the light will realize the fade effect from 1% to 100% or 100% to 1% within the set fade time(5-15s adjustable). (This function is only applicable to the WiFi version of dimmer on/off and self-reset switch.)Voice Control: High compatibility, compatible with and Google Assistant for voice control, you can turn on or off the light just by voice. It can be used in your home, office, hotel, and so on.Multiple Control Achievable: No need to worry about rewiring issues. You can realize double control or even multiple controls on one light after the app setting.Device Share: Makes your dailylife so much easier with a simple clicking on your smartphone, you can hare and control with your family and get a smarter home just for you together.Convenient Installation: The dimmer switch supports a variety of installation methods. Its bracket can be stuck on the rail, or screwed into the wall box to ensure that the through-breaker is firmly installed.Specifications:Name: Dimmer SwitchMaterial: PCType: WM-104-M(rocker switch 1 gang), WM-104B-M(rocker switch 2 gang), WM-105-M(self-reset switch 1 gang), WM-105B-M(self-reset switch 2 gang)(optional)Voltage: 90-250VACWireless protocol: Wi-Fi 2.4GHz IEEE 802.11 b/g/nOperation temp.: 0-40Case temp.Tc: +80 (Max.)IP: IP20Item size: 40* 40* 18mm/ 1.57* 1.57* 0.71inItem weight: 59g/ 2.08ouncePackage size: 80* 80* 30mm/ 3.15* 3.15* 1.18inPackage weight: 60g/ 2.12ouncePacking List:1* Dimmer Switch