Empowering technology with art, sublimating art with technology: using minimalist and atmospheric design language to interpret essence of "less is more", matte material makes matching simple and clear, and simple design the taste of home. The button feedback is obvious, the indicator light is clearly visible, and it can highlight overall simplicity when placed in townhouse. Zigbee signal expansion and amplification: by connecting smart products that also use Zigbee signals, the Zigbee signal is amplified to make Zigbee signal range farther and more stable. Voice control: smarter and more convenient Smarter and more convenient voice control saves you trouble of manual operation, and you can done with one sentence "Hey, , turn on light". Supports mainstream smart speaker devices such as , , , etc. Remote control: everything is under control. Forgot to turn off lights when you go out With smart wall switch, you don't have to worry about it anymore. Through mobile phone APP, you can view and control switches anytime, anywhere. Timed switch lights: no need to worry about falling asleep in bed with lights on. It doesn't matter, the smart wall switch automatically turn off light at a specific time, so you don't have to worry about turning off light. The indicator light turns on first and then off: when main light is not turned on, the indicator light light up first to indicate switch position of light that is not turned on, so that you can quickly find switch in dark. Intimate and thoughtful design. Voltage frequency: AC 100-240V, 50 or 60Hz Protocol link: Zigbee 2.4GHz Operating temperature: -25C-45C Operating humidity: 5percent -90percent RH Fixed hole position: 8cm interval Rated current: 16A Max Maximum load: INC 700W or gang LED300W or gang Color: Grey Material: aluminum alloy Specification: 4 Gang Package Contents: 1 x Smart Switch Only above package content, other products are not included. Note: Light reflection and different displays may cause color of item in picture a little different from real thing. The measurement allowed error is 1-3cm.