Wi-Fi curtain smart touch switch neutral required, you can wire with curtain switch with your electrical driven curtain motor in your home, extra neutral line is required to be wired with. There are 4 wiring terminals. “L” is for Live line load; “N” is for Neutral line output; and “L1″,”L2” are for forward and reverse driving motors. It supports Wi-Fi IEEE 802.11 2.4 GHz b/g/n channel, so you can control this smart switch by “Smart Life” phone App. Setting time and making a group with other smart devices. You also can connect them with your local voice assistants, like Google Home. Just say “Hello, Google. Turn on the curtain.” The smart curatin switch will helo you open the curtain for you automatically. For the working voltage, it is 110V-240V A.C. 50/60Hz, the loading electrical power is 1000W load. It can work in the environment of temperature from -20℃ to 70℃ and the relative humidity is from 10% to 93%. The stand by electrical power can meet no more than 0.2W. You can just touch the glass panel to control the lights. The completed product consists of a tempered glass panel, a touch module, metal bracket and two mounting screws, which they can be installed together through the metal bracket on the wall by your local electrician. The panel is made of tempered glass which is in 86mm86mm size and 4mm thickness. This size can be used in most of European countries and some Asian countries. The finish is glossy and the edges are chamfered. This makes the glass panel look modern, clean and delicate. It’s damp proof, explosion-proof and scratch-proof. About the touch module. The module shell is made of fire-retardant Polycarbonate material, the outer size is about 50mm50mm and 25mm depth. The PCB Electronic components are made in dustless workshop. Advancing Toshiba brand chips are used in our smart touch wall switches. We do QC test for each batch. All the good materials and professional production environments make our TAWOIA brand touch wall switches and electrical power sockets in good and stable quality. All touch switches and sockets comply with EU CE electrical standards. And we applied CE, RoHS, CB for our smart touch wall switches and power sockets. At the same time, we have patents for the design and technology of our products. All the packaging are in environment friendly way.