Product information:
Specifications: 21 key DC plug, 21 key USB head, 21 key bare board remote control, 14 key DC plug, 14 key USB head, 17 key DC plug, 17 key USB head, 14 key bare board remote control, 17 key bare board remote control
Rated Voltage: 5-24V
Interface Type: DC plug and USB
Material: Plastic