Stable performance and high reliability.How to tell if the control box is suitable for your car? Open the damaged electric passenger car and check the control box. If the control box looks the same, the part should fit your car.The instructions for using the remote control are clearly printed on the box.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 flashesStep 3. Turn on the power of the car machine, and the indicator light goes outStep 4. If the frequency matching is unsuccessful (the indicator light does not go out), turn off the power and repeat steps 2 and 3.Power Supply:2xAAA battery(Not included batteries)Part name:Children's electric car controllerModel:CSR-12T-1BVoltage:12VSize:StandardColour:As ShownMaterial:plasticPackage Contents:1 x Receiver1 x Remote ControlOnly 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. Note: 1.Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2.Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 684 hours Hope you have a pleasant shopping experience!