Description: When the reverse gear is engaged, the system automatically enters the detection working state; 30-250CM detection range; Color LCD display function, digital, orientation, sound, dynamic picture step by step prompt Microcomputer intelligent control, accurate digital display, digital, buzzer step by step prompt Dual CPU response is fast. Probe self-test function, probe abnormal status prompt to avoid reverse collision caused by probe damage; Super anti-electromagnetic interference, patented technology, international certification. Quality assurance. No impact on the original electronic system Embedded probe installation, easy to install. Specification: Rated Voltage: 12V DC Working current: 20 ~ 180mA Detection distance: 30CM～250CM Alarm volume: ≥80dB Working temperature: -40 ~ +80 ° C Frequency: 40kHz ± 1kH Note: The actual item maybe has slight color distinct with listing image due to different computer screens, thanks for your understanding. The size of item is manual measurement,please allow 0.5-1inch difference.(1inch=2.54cm) Package: 1*Controller host 1*LCD screen 8*Ultrasonic probe 1*Power Cable 1*Hole opener