1.the system will automatically start up when reversed 2.6 inch TET-LCD display 3.2cable wire, connect to camera signal,and DVD/VCD player receiver 4.shift between camera signal to AV signal by remote controller ,4 sensors 5.night version,wide camera range, 6.english voice speaker,alarm at different distance 7.use USA CPU 8.any color sensor is available and suitable for any car 9.the closer the obstacle,the faster the alert ,keep frequence alarming to indicate safety zone,caution zone, danger zone 10 working voltage: 12V 11. Max power 5W 12. Working temperature: -40-----80 degree 13. Indication Distance: 0.2----3.0m 14. Alarm distance:0.4m-----1.5m