Wireless receiving distance: >20m,

Wireless transmission frequency: 433MHz,

Components Included: 4 sensors/ECU/ buzzer/buzzer cable/power cable,

Audible alert, the closer the obstacle, the faster the beep frequency,

Rated Voltage: DC12V,

Operating Temperature: -40C to +85C,

Max Detect Range: 1.5m/Custom-made,

Transmitting Frequency: 40kHz,

Buzzer Sound Pressure Level: >80dB,

Detect Angle: Horizontal 120, Vertical 60 degree,

Audio Warning: 5 status,

System activates automatically when reverse gear is engaged.