Now the market for car alarm system is not available because they are fixed code . Our car alarm system is the FHCS .Every time you lock the doors, the car doors passwords are changed. A total of 250 million group formed passwords. Even password scanning, Next use the invalid, so that only you can drive your car.we'll be glad to perform what is the true code hopping. Product characteristics :1. Anti-scanning, anti-copy function2. Lock engine functions3. Central locks automation4. Red, blue color LED lights5 vehicle model, washing mode: