Features: 86 Type surfaces mounted design: convenient compatible with users to install and use directly, as well as convenient compatible with later maintenance and replacement. Suitable compatible with ceiling fan: It can used to control the wind speed of ceiling fan, and can flexibly adjust the rotational speed of ceiling fan, which can adjust the wind speed according to the needs, effectively energy save and reduce energy consumption. Stepless speed changer: Adopting stepless speed change technology, it can achieve smooth and continuous wind speed adjustment. With switches: Integrated with the switches function, users can control fan switches and wind speed through the same device, which is more convenient to use. Easy to operate: The operations is simple and intuitived, users can easily adjust the wind speed of the ceiling fan, according to the actual needs. Specifications: Material: ABS+Copper Type: Stepless Speed Regulation Color: White Size: about 8.6x8.6cm/3.38x3.38inch Current: 10-16A Application: compatible with Home Club Hotel etc Package Includes: 1x 86 Type Ceiling Fan Speed Controller with Power Control Button note: Please allow 1-2cm errors due to manual measurement. Please allow compatible with slight color differences due to different display resolution.