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 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 finally close the battery cover. The indicator light will flash three times, indicating that the battery is installed correctly. Step 2. Long press 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: No batteries are included, you need to prepare them yourself Colour:As Shown Material:PVC Package Contents: 1 x Receiver 1 x Remote Control(Due to different product batches, the appearance may vary, which does not affect the use) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.