Stable performance and high reliability. Part name: Children's electric car controller Model: JR1922RXS-D2 Voltage: 12V How to tell if the control box is suitable for your car? Open the electric passenger car and check the control box. If the control box looks the same, the part should fit your car. Frequency matching is required when using it for the first time or replacing the battery. Step 1: Install 2 x AAA 1.5V batteries (pay attention to the positive and negative polarity in the battery compartment), and close the battery cover. The indicator light flashes three times, indicating that the battery is installed correctly. Step 2: Press and hold the frequency key (select car) for about 2 seconds, and the indicator light flashes. Step 3: Turn on the car power, and the indicator light goes out. Step 4: If the frequency matching is unsuccessful (the indicator light does not go out), turn off the power and repeat steps 2 and 3. Note: Batteries are not included; you need to prepare them yourself. Color: As shown Material: PVC Package Contents: 1 x Receiver, 1 x Remote Control (Due to different product batches, the appearance may vary slightly, which does not affect the use). Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The measurement allowed error is +/- 1-3cm.