Voice Alert & Buzzer Universal Parking Sensor System with LED Display Front & Rear 12V

• Customization: Available
• Alert Type: Audible Alarm, Visual Display
• Compatibility: Cars, RVs, SUVs, Trucks, Vans
• Model NO.: HR-303V-4M
• Detection Range: 2 meters
• Installation Type: Flush Mount
• Number of Sensors: 4 sensors
• Operating Temperature: -40℃ - 80℃
• Operating Voltage: 12V
• Power Supply: 12V DC
• Sensor Type: Ultrasonic Sensor
• Waterproof Rating: IP67
• Installation: Rear Bumper
• Beep Alarm: Support with Built-in Buzzer
• Sensor Cable: 2.5m
• Display Cable: 6m
• Operating Frequency: 40kHz
• Use: Rear Parking Assist
• Display: LED Digital Display
• Transport Package: Carton
• Specification: 230*155*55MM
• Trademark: OEM
• Origin: Guangdong, China
• HS Code: 8512301900
• Production Capacity: 20000 Pieces/Month
• Package Size: 47.50cm * 33.50cm * 32.00cm
• Package Gross Weight: 12.000kg

Product Description

Product Description

Universal Rear Parking Sensor System with LED Display, Buzzer & Optional Voice Alert

This product is a rear ultrasonic parking assistance system with four sensors, designed with a standard rear bumper layout to cover key rear blind spots. It detects obstacles in real time and provides visual and audible alerts via a high-definition LED display and intelligent multi-stage buzzer warnings, with alert frequency increasing as the distance decreases.

An optional voice alert upgrade is available, offering clear distance-based prompts:  "Attention!" / "Warning!" / "Stop!"

Are you experiencing any of the following parking challenges?

1.Difficulty judging parking distance 

2.Narrow roads make it difficult to maintain a safe distance, increasing the risk of scratches 

3.Rear blind spots during reversing.

4.Low-profile obstacles are difficult to detect 

5.Reduced visibility in rainy or nighttime conditions 

6.New drivers often struggle to accurately judge parking distance

Key Features

Core Functions

1.Reverse Parking Assistance
Continuously detects rear obstacles in tight parking spaces or garages and provides distance alerts to ensure safe parking.

2.Tight-Space U-Turn / Reverse Guidance
Helps drivers maintain a safe distance from vehicles, walls, or obstacles when performing U-turns or reversing on narrow roads.

3.Low-Height Obstacle Detection
Accurately detects curbs, fire hydrants, short posts, and other low-lying obstacles in the rear blind spot, issuing timely warnings to prevent scrapes and collisions.

4.All-Weather & Nighttime Protection
Provides detection capabilities beyond human vision in rain, fog, heavy snow, or complete darkness, keeping the rear environment fully under control.

5.Enhanced Confidence for Novice Drivers
Offers intuitive audio-visual guidance to help novice drivers better perceive space, reduce stress during reversing, and operate with greater confidence.

Our Advantages

1.High-Frequency Ultrasonic Precision Sensing
Uses high-frequency ultrasonic sensors for accurate distance detection, effective range 0.3-2 m with 0.1 m resolution. 

2.IP67 Industrial-Grade Waterproofing
Sensors feature IP67-rated water and dust protection, resistant to heavy rain, car washes, and puddles, ensuring stable performance and reduced false alarms.

3.Compact Display, Clear Line of Sight
The LED screen features a sleek, minimal design, easily mounted on the dashboard without obstructing the driver's view.

4.Dual Audio-Visual Alerts for Safer Reversing
Visual: Three-color indicator lights change from green → yellow → red as obstacles approach, clearly showing risk level.
Audio: Built-in smart buzzer increases beep frequency as distance decreases; optional voice prompts announce "Attention!", "Warning!", "Stop!" for layered auditory guidance.

5.Flexible Configurations to Meet Diverse Needs
Various control units, sensors, and waterproof wiring options allow tailored setups to suit different vehicle models, budgets, and installation preferences.

6.OEM-Grade Color Matching
Available in hundreds of OEM paint colors, sensors seamlessly blend with the bumper, maintaining the vehicle's original appearance.

7.Non-Invasive Installation to Protect Paintwork
Includes professional drilling tools for smooth, precise sensor mounting, preserving the car's original finish.

Specification

Specification	Parameter
Kind	Obstacle Detection Radar
Working Principle	Ultrasonic Reflected Wave
Function	Rear Parking Assist
Operating Frequency	40kHz
Operating Temperature Range	-40°C ~ +80°C
Rated Operating Voltage	12V(DC)
Operating Voltage Range	9V~16V(DC)
Operating Current	30-150mA
Power Consumption	5W
Test Distance	0.3-2m
Visual Warning	LED Display
Audible Alert	Beeping /  Voice Prompts
Number of Sensors	4
Colors for Sensors	Multiple colors are available

Packing & Delivery

Precautions

1. Product Images
Images are for reference only. Actual product may vary by configuration.

2. Driver Assistance Notice
For assistance only. Drivers must remain attentive to surroundings.

3. Maintenance Advice
Check sensors regularly. Clean or service if abnormal operation occurs.

4. User Manual
Read the user manual carefully before use.

5. Installation Recommendation
Professional installation is recommended.

Company Profile

FAQ

Q1: Manufacturer or Trading Company?
A:   We are a manufacturer with our own R&D team and production facilities.
 
Q2: What is your MOQ?
A:   MOQ is negotiable. Please share your requirements.
 
Q3: Can I get a sample for testing?
A:   Yes, samples are available. Please contact us for sample and shipping costs.
 
Q4: Do you offer OEM and ODM service?
A:   Yes, OEM & ODM services are available. Please contact us with your specific customization needs.
 
Q5: Do you accept long-term cooperation or distributor pricing?
A:   Yes, please contact us for distributor or bulk pricing details.
 
Q6: What is the lead time ?
A:   3–15 working days, depending on order quantity.
 
Q7: What is your warranty term ?
A:   One Year
 
Q8: What is the shipping method?
A:   We support shipment via DHL, FedEx, UPS, TNT, EMS, as well as air and sea freight.