Features: English intelligent Voice Control Adapter 5V USB Socket Suitable for USB Lights, fan, etc. Supports English voice control only; not support other languages. Voice commands include: “Open device,” “Close device,” “A little faster,” “Slow down,” “Open the light,” “Close the light,” “Close the light,” and “Dim the light.” USB male input, USB female output, supports devices with 5V2A,not support data transmission Convenient and quick, supports adjusting the brightness of USB lights and the speed of fan Mainly used for USB fan, USB lights, humidifiers, water pumps, USB ceiling fan, and various other USB 5V devices. Not support controlling devices with batteries Can be power by USB adapters, car chargmh, power adapters, and other USB power sources Specifications: Component：: Plastic + Metal Size:about 4.5x3.5x1.7cm/1.77x1.37x0.66in Power: 5V2A 10W Connection: USB English voice control adapter Socket Package Includes: 1pc USB English voice control switcher note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.