Features: OOTDTY Advantages: long management high confidentiality, regular performance, low energy consumption. High sensitivity: Wireless indicators can pass through walls, floors, doors or-windows with out being blocked convenient: You can use the transmitter to turn the receiver on/off within the handheld remote control distance. Easy to use: wireless control, clean to install, immediately update old or broken. This product can management lights, motor, fans, cameras, video signals, audio-signals, electrical doorways / locks / window. This board is universal. The surface fan, shaking fan and desk fan would be switched over right into a remote control fan even supposing it became a fan without handheld remote control before. The modification is simple, for example, the mechanical fan has 4 black wires connected-to the common-terminal, and the rest three wires would be managed via connecting the high, middle and low grades respectively. The amendment is simple! It has the purposes of napping air and self-heating air timing. Specifications: Material: Plastics Size:Approx/4" Main Board Size: Approx/3" Type: Red English/Red Vietnamese Board/Red Chinese and English Voltages:110-275v Package Includes: 1 Set Circuit Board Note: Please enable 1-2cm mistakes thanks to handbook measurement,Please just ensure you don't intellect before you order. Due to the difference between diversified monitors, the image won't mirror the particular color of the item.