Features: Advantages: long control range, high confidentiality, stable performance, low power consumption. High sensitivity: Wireless signals can pass through walls, floors, doors or-windows without being blocked.Very convenient: You can use the transmitter to turn the receiver on/off anywhere within the remote control distance. Easy to use: wireless control, easy to install, directly replace old or broken. This product can control lights, motor, fans, cameras, video signals, audio-signals, electric doors / locks / window. This board is universal. The floor fan, shaking fan and desk fan can be converted into a remote control fan even if it was a fan without remote control before. The modification is simple, for example, the mechanical fan has four black wires connected-to the common-terminal, and the remaining three wires can be controlled by connecting the high, middle and low grades respectively. The modification is simple! It has the functions of sleeping air and self-heating air timing. Specifications: Material: Plastics Size:Approx.10.5x4cm/4.13x1.57" Main Board Size: Approx.8.4x4.3cm/3.3x1.69" Type: Red English/Red Vietnamese Board/Red Chinese and English Voltages:110-275v Note: Please allow 1-2cm errors due to manual measurement,Please make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1 Set Circuit Board