Features (sensor): 1) System acts automatically when reverse gear is engaged 2) Audible and visible alert 3) 4-color and 7-segment LED display changes as vehicle moves closer to the object 4) 2/4 built-in ultrasonic sensors optionally detect all directions 5) Speaker is built into display 6) Sensor color optional 7) Blue lighting/3 colors gleamy sensors optional Features (car alarms): 1) Remote alarm to phone, without limit of distance 2) Anti-burglar, anti-hijacking and anti-destroying 3) Patented technology, high quality and reliability 4) Good adaptability for most cars and most countries 5) Remote arming or disarming by phone or transmitter 6) Silent arming, automatic re-arming 7) Local alarm by siren and lights, remote alarm to preset telephone by voice 8) Multiple triggering: door open triggering, vibration triggering, power-off triggering, ignition triggering 9) Panic button, emergency help alarm 10) Easy to install and use, friendly operation interface, with voice menu in different languages 11) Complete self-service, free of service charges 12) Based on GSM networks, worldwide signal coverage and cost-effective 13) Remote monitoring of sounds around the car and broadcasting by telephone 14) Cut off the car\'\'s fuel or power supply by telephone 15) Lock or unlock the car door by transmitter or telephone 16) Transmitters with code-hopping technology 17) Adjustable 8-scales vibration sensitivity, vibration sensor could be enabled or disabled by telephone 18) Free to change the operation passwords and the alarm telephone numbers 19) Central lock automation, automatic closing door upon braking 21) Remote engine or air-conditioner start (optional) 22) Car finding with sounds and lights 23) Light flashing for temporary parking 24) Car position tracking 25) Weight: 1.9kg 26) When your car is illegally operated or stolen by thieves or robbers, it will report the messages to you or your friends anywhere in the world immediately by the GSM phone network