Features:

1) With waterproof designing, control box can be installed outside the 

    compartment. RF data transmission between display and control box 

    eliminates tough wiring work especially for long vehicles. Equipped with 

    S-11 sensors, which can be installed underneath at the back, the system 

    is an ideal anti-collision solution for buses, trucks and recreational vehicles. 

2) Available sensors quantity: 4 rear sensors

3) Audible distance indication 

4) Distance and sound 

    a) 1.50 - 0.80m: Bi, Bi, Bi 

    b) 0.80 - 0.40m: Bi  Bi  BiBi (the closer, the faster) 

    c) 0.40 - 0m: Bi... (solid beeping)