Description This Mini Two-Channel Remote Control Module is perfect for toy accessories and DIY projects,allowing for easy control and customization. With its compact size and fine design, this module is ideal for creating innovative and interactive toys. Features - Color: As Shown - Material:Copper - Size: 3.50X3.00X1.00cm/1.38X1.18X0.39in(transmitter ) - Size: 2.40X1.90X1.00cm/0.94X0.75X0.39in (receiving board) - Transmitter voltage: DC3V - Receiving board voltage: DC3-4.5V -Mounting hole: applicable to M2.3/M2.5 screws -Remote control distance: about 3-5 meters -Wiring method: The red, black wires are connected to the power supply, and the yellow and green wires are connected to the motor. - Encourages scientific exploration with the 2-Channel RC Module . Foster practical skills and thinking. - The DIY parts can bring much more joy to your kids and they will learn so much in the process of having fun. - This DIYRC Module allows students to conduct multiple experiments and is great to share with family, friends, or classmates. - Easy to use, not only for home, but also for school, better attract students, cultivate their active learning towards science. - Itcan be equipped with 130, 180, 300 and other micro motor to make electric remote control cars. Package list: 4 x circuit boards 4 x antennas