Comments about 2 SENSOR REVERSE BACKUP ALERT SYSTEM WITH DISPLAY:

The picture is correct, the box doesn't contain a separate buzzer. Instead, the display unit has a tiny build-in buzzer, so beeping isn't very loud. Compared with my other unit, it only senses within 2m, while my other model starts to beep at 5m out. It still does the job though.

Comments about 2 SENSOR REVERSE BACKUP ALERT SYSTEM WITH DISPLAY:

The product originally calls for the LED display for the distance you are from an object behind you to be mounted on the front dash. THis however seems really a bad idea as you are not looking forward when you are backing up. You are either looking in the rear view mirror or over your shoulder. It was very easy to install the LED display on the deck top in the rear window. All I had to do was reverse the sensor (instead of ABCD from left to right on the rear bumper, ABCD from Right to left) This had to be done to give the display the correct indication where an object was when backing up because I mounted the display on the rear deck instead of on the dash. Otherwise a great product.