Things buyers must know: 1. The equipment must be connected to the correct power source. The acceptable voltage range of this system is 8-20V. If the voltage is too high or too low, the system will not work properly. 2. Installing this system requires some professional automotive electronics knowledge. Please read the product manual carefully. Please pay attention to output signal cables must be connected to the correct signal according to the "+" or "-" on the product manual. Wrong connections may cause short circuits or burnout of the product. 3. All products have been strictly inspected before leaving the factory to ensure that they are complete and working properly. If you have any problems after receiving the product, please contact us immediately. We will give you the best solution. Good communication is very necessary , we reject all disputes opened without communication. 4. The product manual is not only in English, we also have Russian, Portuguese, Spanish, etc., You can check the different languages by scanning the QR code in the product manual. 5. The product kit is the same as shown in the picture, please note that the kit with the mobile app on the picture has the function of the mobile app, and the kit without the mobile app on the picture does not have the app function. 6. Different model have different kit. Each kit is the same as shown in the picture. You can check the detailed introduction of the kit at the bottom of the website. Model DD3CBT Features: 1. lock/unlock/remote start by remote key or APP. 2. Automatic engine lock the engine cannot be started after locking. 3. Push one button start / stop engine. 4. Remot open back box by key or APP Requires the car itself to have a controllable circuit. 5. Sound and light alarm or silent anti-theft. 6. APP PKE keyless comfort entry function, automatically unlock the car 1.5-3 meters away from the car, automatically lock the door 3-5 meters away from the car. 7. Mobile APP keyless entry can be temporarily disabled. 8. WPreheating start, you can choose between a gasoline car or a diesel car using the switch. 9. Automatically lock the door by stepping on the foot brake after starting, and automatically unlock when the flame is turned off 10. Blue LED Alarm light prompt 11. Emergency reset. 12. Anti-theft alarm function Illegal door opening or hit the brakes to alarm. 13. You can disable the remote start function via the switch. 14. Using high-quality relays to output control signals, the system is more stable and reliable. Packing List: 2* remote keys 1* Ignition and alarm module 2* Install wiring harness 1* Start-stop button 1* Emergency reset button 1* The LED light 1* Product manual Model K5-8200X Features: 1. lock/unlock/remote start by remote key. 2. RFID identification If the key is out of Induction range, the engine cannot be started. 3. Push one button start / stop engine. 4. Remot open back box by key Requires the car itself to have a controllable circuit. 5. Sound and light alarm or silent anti-theft. 6. PKE keyless comfort entry function, automatically unlock the car 1.5-3 meters away from the car, automatically lock the door 3-5 meters away from the car. 7. PKE keyless entry can be temporarily closed. 8. Warm up for 3 seconds at starting for diesel cars. 9. Automatically lock the door by stepping on the foot brake after starting, and automatically unlock when the flame is turned off 10. Intelligent anti-hijacking if there is no key after the engine is started, the engine will be automatically shut down after 2 minutes to prevent hijacking. 11. Intelligent anti-hijacking can be temporarily closed. 12. Blue LED Alarm light prompt 13. Emergency reset. 14. Anti-theft alarm function Illegal door opening or hit the brakes to alarm. 15. Anti-theft power off after the system is locked, the fuel and electricity of the car itself is cut off, even if the key of the car itself is used, the engine cannot be started. 16. Using high-quality relays to output control signals, the system is more stable and reliable. Packing List: 2* Intelligent remote keys 1* Ignition and alarm module 2* Install wiring harness 1* Start-stop button 2* PKE Induction Antenna 1*high-frequency antenna 1* Emergency reset button 1* The LED light 1* Product manual Model K5-9100DX Features: 1. lock/unlock/remote start by remote key or APP. 2. Automatic engine lock the engine cannot be started after locking. 3. Push one button start / stop engine. 4. Remot open back box by key or APP Requires the car itself to have a controllable circuit. 5. Sound and light alarm or silent anti-theft. 6. APP PKE keyless comfort entry function, automatically unlock the car 1.5-3 meters away from the car, automatically lock the door 3-5 meters away from the car. 7. Mobile APP keyless entry can be temporarily disabled. 8. Warm up for 3 seconds at starting for diesel cars. 9. Automatically lock the door by stepping on the foot brake after starting, and automatically unlock when the flame is turned