---
product_id: 460185734
title: "Car Blind Spot Detection System, 24GHz Millimeter Wave Radar Sensor Blind Spot Monitoring System Kit, Universal Car SUVs Trucks RVs Lane Changing Warning with Reversing Radar Parking System"
brand: "by-j"
price: "HK$1783"
currency: HKD
in_stock: true
url: https://www.desertcart.hk/products/460185734-car-blind-spot-detection-system-24ghz-millimeter-wave-radar-sensor
store_origin: HK
region: Hong Kong
---

# 24GHz millimeter-wave radar for precise detection LED + buzzer alerts for instant blind spot warnings 98ft detection range for early hazard alerts Car Blind Spot Detection System, 24GHz Millimeter Wave Radar Sensor Blind Spot Monitoring System Kit, Universal Car SUVs Trucks RVs Lane Changing Warning with Reversing Radar Parking System

**Brand:** by-j
**Price:** HK$1783
**Availability:** ✅ In Stock

## Summary

> 🚦 Drive Confidently, Change Lanes Fearlessly!

## Quick Answers

- **What is this?** Car Blind Spot Detection System, 24GHz Millimeter Wave Radar Sensor Blind Spot Monitoring System Kit, Universal Car SUVs Trucks RVs Lane Changing Warning with Reversing Radar Parking System by by-j
- **How much does it cost?** HK$1783 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/460185734-car-blind-spot-detection-system-24ghz-millimeter-wave-radar-sensor)

## Best For

- by-j enthusiasts

## Why This Product

- Trusted by-j brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Smart Alert Logic:** No false alarms when overtaking or stopped—only real collision risks trigger warnings.
- • **Dual Microwave Sensors:** Left and right rear sensors activate with turn signals to catch hidden vehicles instantly.
- • **Multi-Function Safety Suite:** Combines blind spot detection, lane change assist, and door open warnings for comprehensive protection.
- • **Advanced 24GHz Radar Precision:** Cutting-edge millimeter-wave tech scans up to 98ft for unmatched blind spot awareness.
- • **Universal Fit for Soft Fascia Vehicles:** Seamlessly integrates with most sedans, SUVs, and trucks (excluding metal bumpers) for effortless upgrade.

## Overview

The BY-J Car Blind Spot Detection System leverages a 24GHz millimeter-wave radar with dual microwave sensors to monitor blind spots up to 98ft away. Featuring LED and buzzer alerts, it intelligently distinguishes real collision risks from safe scenarios, enhancing lane change safety. Designed for universal compatibility with most soft rear fascia vehicles, this OEM-grade system also includes lane change assist and door open warnings, making it a must-have upgrade for proactive drivers.

## Description

BY-J Car Blind Spot Detection System, 24GHz Millimeter Wave Radar Sensor Blind Spot Monitoring System Kit, Universal Car SUVs Trucks RVs Lane Changing Warning with Reversing Radar Parking System

## Features

- [Blind Spot Detection System] This 24GHz Ultrasonic Radar Sensor Blind Area Detection System is a vehicle assistance device that greatly helps you detect the possible collision risks in the blind spot during driving.
- [Double Microwave Radar Sensor] High-speed frequency sensors for the left-rear and right-rear of the vehicle. The BSD system is activated with the turn signals, whenever there is a moving object pop into the rear of the vehicle, with the aid of LED lighting on, blinking, buzzer sound so that the driver can be cautious when lane changing to avoid the possibility of side crash accident.
- [3 Major Functions] This Blind Spot Sensor integrates BSD-blind spot monitoring, LCA-parallel lane change assist, Dow -Open Door Warning (optional two doors) 4 functions to help detect the possible collision risk.
- [Long Detecting Distance] The system uses a 24GHz millimeter-wave radar sensor chip, uses single transmit and four receive radar antennas, is equipped with sophisticated computer algorithms, and automotive-grade quality waterproof plugs, with a detection range of up to 98ft, can monitor the closing objects in the neighbor lane within a range of 26ft with speed gap over 0.5m/second.
- [Blind Spot Warning System] when the car behind us is stationary after stopping, there is no alarm for the blind spot; when the car behind us is slower than us, there is no danger of collision and no alarm; likewise, when we overtake, we are faster than the car behind us and there is no alarm.
- [Important Notes] This system integrates blind spot detection and reversing assistance.This item fits for most DC12v sedan, compact, SUV, MPVs, pickup etc, doesn't suitable for vehiche with metal bumper, and professional installer installation is required.
- This Radar Blind Spot System is an OEM-grade universal solution that will only function on vehicles with a soft rear fascia. This product cannot function through metal bumpers.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Item Weight | 2.44 pounds |
| Product Dimensions | 9.45 x 6.7 x 3.94 inches |
| Display Type | LED |
| Wireless Remote | No |

## Product Details

- **Brand:** BY-J
- **Compatible Devices:** Car
- **Frequency Bands Supported:** 24GHz
- **Power Source:** Corded Electric
- **Display Type:** LED
- **Voltage:** 12 Volts
- **Product Dimensions:** 9.45"L x 6.7"W x 3.94"H
- **UPC:** 739722614515

## Images

![Car Blind Spot Detection System, 24GHz Millimeter Wave Radar Sensor Blind Spot Monitoring System Kit, Universal Car SUVs Trucks RVs Lane Changing Warning with Reversing Radar Parking System - Image 1](https://m.media-amazon.com/images/I/618WyRJIeZL.jpg)
![Car Blind Spot Detection System, 24GHz Millimeter Wave Radar Sensor Blind Spot Monitoring System Kit, Universal Car SUVs Trucks RVs Lane Changing Warning with Reversing Radar Parking System - Image 2](https://m.media-amazon.com/images/I/81Qk89kHIaL.jpg)
![Car Blind Spot Detection System, 24GHz Millimeter Wave Radar Sensor Blind Spot Monitoring System Kit, Universal Car SUVs Trucks RVs Lane Changing Warning with Reversing Radar Parking System - Image 3](https://m.media-amazon.com/images/I/814YrT9MifL.jpg)
![Car Blind Spot Detection System, 24GHz Millimeter Wave Radar Sensor Blind Spot Monitoring System Kit, Universal Car SUVs Trucks RVs Lane Changing Warning with Reversing Radar Parking System - Image 4](https://m.media-amazon.com/images/I/717lUrYF0EL.jpg)
![Car Blind Spot Detection System, 24GHz Millimeter Wave Radar Sensor Blind Spot Monitoring System Kit, Universal Car SUVs Trucks RVs Lane Changing Warning with Reversing Radar Parking System - Image 5](https://m.media-amazon.com/images/I/71jIR+RxNfL.jpg)

## Available Options

This product comes in different **Color** options.

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**Shop now:** [https://www.desertcart.hk/products/460185734-car-blind-spot-detection-system-24ghz-millimeter-wave-radar-sensor](https://www.desertcart.hk/products/460185734-car-blind-spot-detection-system-24ghz-millimeter-wave-radar-sensor)

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-01-29*