First Safe 4-Sensor 22 mm Parking Sensor with Buzzer

First Safe 4-Sensor 22 mm Parking Sensor: Reverse Without Hesitation

A car parking sensor is only missed when you don't have one. The First Safe KZ-078 kit fills that gap with four 22 mm ultrasonic sensors and an alert buzzer connected by a 5 m cable. As soon as reverse gear is engaged, the system listens behind you and increases the speed of its beeping as the obstacle approaches. This 4-sensor parking sensor gives a car without factory parking assistance the same convenience as a modern model, without affecting the vehicle's electronics.

Twelve Sensor Colors to Blend into the Rear Bumper

First Safe offers the KZ-078 in twelve colors: black, matte black, white, pearl white, silver, gray, gold, green, yellow, beige, red, and brown. Choose the color closest to your paint, and the four discs blend into the bumper line, becoming almost invisible from a meter away. That is the difference between an aftermarket accessory and a Parktronic parking aid that looks factory-installed. The ABS sensors withstand debris, high-pressure washing, and temperature fluctuations.

The buzzer remains hidden inside the cabin: it can be stuck behind a trunk trim panel or under the rear parcel shelf, out of sight but perfectly audible. No screen clutters the dashboard. It is the choice of a discreet rear parking sensor, designed for drivers who prefer sound to images.

40 kHz Ultrasound and Dual Processing: The KZ-078 Technology

Each sensor emits a 40 kHz pulse and measures the return time of the echo. The control box processes the four measurements and triggers the alert between 0.3 and 2.5 m depending on the size of the obstacle. Operating on 12 V DC, the kit accepts a voltage range of 9 to 16 V and consumes 20 to 200 mA: enough to run on the reverse light circuit without straining the battery. The obstacle detection from 0 to 2.5 m covers everything from a concrete post to a low wall or parking bollard.

• 12 V universal parking sensor — compatible with the vast majority of internal combustion cars with plastic bumpers
• 22 mm ultrasonic sensor — standard diameter, hole saw included in the box
• Reverse alert buzzer — progressive beeping that gets faster as you approach
• Four identical sensors — no fixed position, identified on the control box (A B C D from left to right)
• Complete wiring — 2.3 m per sensor, 5 m for the buzzer, 0.8 m for power

Installing the First Safe KZ-078 at the Correct Height

The golden rule: drill the four holes between 50 and 70 cm above the ground, at regular intervals on the rear bumper. The 22 mm hole saw is included, and the wiring is tapped into the reverse light so that the system only activates in reverse gear. Installing a parking sensor without drilling is not possible here: this flush-mount kit requires four holes, which is the price of discretion. Allow yourself a morning to install it independently, or much less time with a professional.

Note: The sensors are not designed for metal bumpers, and the manufacturer reserves this kit for 12 V internal combustion vehicles. For electric or plug-in hybrid cars, check compatibility before installation.

Does a Parking Sensor Really Replace a Camera?

The two complement each other rather than compete. The camera shows, the sensor measures — and it keeps measuring at night, in the rain, or when the lens is covered in mud. In a tight parking space, it is the rhythm of the beeping that tells you when to stop, not the image. Many drivers therefore add this car parking sensor to a camera already installed. Useful clarification: this model works on its own and connects to neither a screen nor a monitor.

Choosing Your Parking Aid Kit at Becquet Voiture

Driver assistance electronics are part of our daily lives: radars, cameras, reverse boxes—we stock complete kits delivered with their own hardware and drilling tool rather than mismatched sets. Our team answers in French before and after purchase, including help choosing the sensor color. Would a wireless parking sensor appeal to you more? Let us know: our parking assistance range expands every month.

Choose your sensor color and equip your car with the First Safe parking sensor today.

Type: 4-sensor parking sensor kit
Brand: First Safe
Model: KZ-078
Sensor diameter: 22 mm
Detection distance: 0.3 to 2.5 m (large obstacles)
Alert distance: 0.3 to 1.5 m
Nominal voltage: 12 V DC
Voltage range: 9 to 16 V
Nominal current: 20 to 200 mA
Ultrasonic frequency: 40 kHz
Material: ABS
Certification: CE, ROHS
Sensor cable: approximately 2.3 m
Buzzer cable: approximately 5 m
Power cable: approximately 0.8 m
Recommended installation height: 50 to 70 cm above the ground
Contents: 1 control box, 1 buzzer, 4 sensors, 1 power cable, 1 hole saw, 2 double-sided adhesive pads, 1 manual
Colors: 12 colors to choose from
Compatibility: 12 V internal combustion cars, plastic bumpers — check compatibility depending on the version