- "BiBi" audible warning buzzer in 3 steps (Dangdang alarm optional)

- Volume switch control (Bibi alarm and voice alarm switchable)

- Voice alarm (stop.stop.stop), any other language is available

- 4 rear sensors for full coverage, 2 ~ 8 sensors available for front & rear detecting

- Heavy rain-proof & all weather design

- High quality and easy to install

- All spare parts are compatible

- Different sensors & colors optional (stick-on & insert-in)