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. This system is universal and can be installed in almost any 12V car, but it cannot work with the original push button start system of the car itself, or the central door lock with double pulse unlocking, or the pneumatic door lock.3.The models with mobile APP in the picture all have Bluetooth. These models can use the APP to remotely control the car to lock/unlock/open the trunk/start the engine.4. Installing this system requires some profeional 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.5. 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 neceary , we reject all disputes opened without communication.6. The product manual is not only in English, we also have Ruian, Portuguese, Spanish, etc., You can check the different languages by scanning the QR code in the product manual. Model K3-8100 Features:1. lock/unlock/remote start by remote key or APP.2. Car original remote control remote start.3. Push one button start / stop engine.4. Compatible with car's original anti-theft system.5. Engine lock (can't start the engine with a button after the module is locked).6. Automatically lock door while driving, automatically unlock door when the engine is turned off.7. Remot open back box by key or APP (Requires the car itself to have a controllable circuit).8. Select petrol mode/diesel mode by switch (Warm up at starting).Packing List:1* ignition control module2* Install wiring harne2* Remote keys1* Start stop button1* Product manual Model K5-9100 Features:1. lock/unlock/remote start by remote key or APP.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 or APP (Requires the car itself to have a controllable circuit).5. Sound and light alarm or silent anti-theft.6. PKE keyle 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 keyle 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 off10. 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 prompt13. Collision to alarm.14. Emergency reset.15. Anti-theft alarm function (Illegal door opening or hit the brakes to alarm).16. 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).17. Using high-quality relays to output control signals, the system is more stable and reliable.Packing List:2* Intelligent remote keys1* Ignition and alarm module2* Install wiring harne1* Start-stop button2* PKE Induction Antenna1* Emergency reset button1* Collision sensor1* The LED light1* Product manual Model K5-9100S 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 keyle 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 keyle 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 off10. 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 prompt13. 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 hig