Aluminum alloy material, a variety of colors are optional. Support Mandarin and dialect recognition, custom wake-up words, custom output instructionswith frame, the buttons can be customized by sending codes, button mode is optional (momentary touch, reverse switch, long press).The text on the button is hollow, the brightness of the light is adjustable, and the light color can be chosen as bright white or warm yellow. Dry node output.DC 24V power supply, 86 bottom installation.