Car reversing radar system with 4 ultrasonic sensors for pure audible buzzer alerts, featuring anti-false alarm technology, waterproof shockproof construction, and 30-150cm detection range compatible with 12V vehicles
4-Probe Ultrasonic Reversing Radar with Audible Buzzer Alerts and 30-150cm Detection Range

Designed for drivers seeking reliable obstacle detection without visual distraction, this 4-sensor reversing radar system uses pure audible buzzer alerts to indicate proximity to objects behind the vehicle. With ultrasonic sensors providing coverage across a 30-150cm detection zone, the system delivers progressive audio warnings through three distinct beep modes as obstacles approach, helping prevent collisions during parking manoeuvres. Engineered with anti-false alarm technology and high sensitivity components, it maintains stable performance while minimising incorrect alerts, and features waterproof, shockproof construction suitable for various weather conditions and driving environments.
Features and Construction

This reversing radar prioritises functional reliability through specialised components and protective systems, delivering obstacle detection without visual displays that might distract drivers.
Material and Build
The system incorporates ultrasonic sensor technology for accurate distance measurement, housed within weather-resistant materials that enable waterproof operation. Electronic circuits include protective mechanisms designed to prevent overheating or overloading, while the construction provides shockproof characteristics for durability during vehicle operation. Sensors are available in multiple colours including black, dark blue, grey, red, silver, and white options to coordinate with different vehicle aesthetics.
Size and Practical Fit
The main control unit measures 3.4 inches by 2.4 inches by 0.8 inches, providing compact dimensions suitable for discreet installation within vehicle interiors. Four separate ultrasonic sensors offer comprehensive coverage across the rear of the vehicle, detecting obstacles within a 30-150cm range with accuracy supported by advanced chipset technology. The system operates on standard 12V vehicle electrical systems, though compatibility with 24V vehicles is not included, requiring verification of vehicle specifications before installation.
Uses and Placement

This reversing radar addresses specific parking scenarios where rear visibility may be limited, providing audible cues about obstacle proximity without requiring drivers to divert visual attention from their surroundings.
Event or Professional Use
For commercial vehicles or situations requiring frequent reversing in confined spaces, the system's progressive audible alerts allow operators to concentrate on steering while receiving distance information through audio cues. The anti-false alarm technology reduces incorrect alerts that could undermine confidence during precise manoeuvres, while the waterproof construction ensures consistent performance regardless of weather conditions affecting professional operations.
Everyday Home Use
Family vehicles benefit from the system's obstacle detection during school drop-offs, supermarket parking, or garage reversing where children, shopping trolleys, or structural elements may create blind spots. The pure buzzer system eliminates the need for visual display interpretation, allowing drivers to maintain focus on their surroundings while the audible alerts signal approaching objects with increasing urgency as distance decreases.
Benefits and Buying Value

This reversing radar delivers practical advantages through reliable detection technology and straightforward installation, providing collision prevention without complex interfaces or ongoing maintenance requirements.
Reuse and Low Maintenance
The system's waterproof and shockproof characteristics support continued operation across seasonal changes and varying road conditions, while protective circuits help prevent damage from electrical fluctuations. With no visual display components that might fail or require adjustment, the pure buzzer approach simplifies long-term use through basic audio feedback that doesn't demand calibration or screen maintenance.
Why Choose This Product
This 4-sensor system offers comprehensive rear coverage with distance-specific audible alerts that help drivers gauge obstacle proximity through sound patterns. The inclusion of a universal hole saw and installation manual facilitates straightforward mounting, while the anti-false alarm technology provides reliable alerts that drivers can trust during precise parking manoeuvres. For vehicles lacking factory-installed reversing assistance or those needing upgraded detection capabilities, this system delivers functional obstacle awareness without distracting visual interfaces.






