Dolphin DFM400 Reverse Parking Sensors Flush Mount OEM Style 4 Ultrasonic Radar Sensor Kit Audio Alert System – Maroon

Dolphin Flush Audio Reverse Parking Sensors This kit is the flush fitting version of the award winning DPS400 kit. Your best buy for the most professional looking installation yet! Rather than drilling holes in the bumper and pushing the sensors into place as with our other parking sensor kits with this system you get a hole punch included with the kit and fit the sensors from the rear for a flush fit. These sensors have a large adhesive rim which means that after you have used the hole punch to create your hole, you just need to remove the red layer and adhere the sensor to the inner side of your bumper with the centre lined up in the hole. Finally the inner part of the sensor then has a screw mechanism to adjust the front of the head forwards to align it with the front of the bumper, this mechanism allows for different thickness of bumpers to give a proper flush fitting. The Kit includes a 16.5mm hole punch to perforate bumper with the exact hole size for the sensor to be placed through. The system works by radiating ultrasonic beams throughout the area behind the vehicle. The beams are then reflected by obstructions behind the vehicle, and re-enter the sensors. The control box uses the reflected beam information to calculate the distance of the obstruction. As with the other systems the Dolphin unit is activated when reverse gear is engaged. As the vehicle is reversing, when the vehicle is less than 1.5 metres from the obstruction the audible alert will emit intermittent bleeps. As the vehicle gets closer to the obstruction the frequency of the bleeps increases. At 30 centimetres from the obstruction the bleeps become a continuous solid tone.