--- product_id: 460185734 title: "- 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" brand: "by-j" price: "R$2233" currency: BRL in_stock: true reviews_count: 1 category: "By J" url: https://www.desertcart.com.br/products/460185734-by-j-car-blind-spot-detection-system-24ghz-millimeter-wave store_origin: BR region: Brazil --- # 24GHz millimeter-wave radar for precise detection LED + buzzer alerts for instant blind spot warnings 98ft long-range monitoring for safer lane changes - 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 **Brand:** by-j **Price:** R$2233 **Availability:** ✅ In Stock ## Summary > 🚦 Own the road with confidence — never miss a blind spot again! ## Quick Answers - **What is this?** - 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 by by-j - **How much does it cost?** R$2233 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/460185734-by-j-car-blind-spot-detection-system-24ghz-millimeter-wave) ## 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 System:** Integrated LED indicators and buzzer alarms activate with turn signals to warn you of potential collision risks instantly. - • **Radar-Powered Safety:** Advanced 24GHz millimeter-wave radar ensures early detection of vehicles in your blind spots up to 98ft away. - • **Multi-Function Protection:** Combines Blind Spot Detection, Lane Change Assist, and Open Door Warning to cover all critical safety angles. - • **Seamless Driving Confidence:** Eliminate guesswork during lane changes and parking with real-time monitoring that distinguishes moving objects from static ones. - • **Universal Fit for Your Ride:** Designed for most DC12V sedans, SUVs, trucks, and RVs with plastic bumpers—upgrade your vehicle’s safety without hassle. ## Overview The BY-J Car Blind Spot Detection System uses cutting-edge 24GHz millimeter-wave radar technology to monitor blind spots up to 98ft away, providing real-time LED and buzzer alerts synchronized with your turn signals. This universal kit fits most DC12V vehicles with plastic bumpers and integrates multiple safety functions including lane change assist and open door warnings, enhancing driving safety and reducing collision risks during lane changes and parking. ## Description Product description The rearview mirrors on both sides of the car can only see both sides of the car body, and cannot fully collect all the information around the car body, especially from the main road on the auxiliary road. The left rearview mirror cannot observe the vehicle. If you accelerate and cut into the inner lane at a large angle , Easy to collide with a vehicle driving at a high speed in the inner lane. Blind spot information systems are increasingly a "must-have" feature for large trucks and SUVs with long tail ends and poor rear visibility. WARNING: Do not use the blind spot information system as a replacement for using the interior and exterior mirrors or looking over your shoulder before changing lanes. The blind spot information system is not a replacement for careful driving. WARNING: The system may not operate properly during severe weather conditions, for example snow, ice, heavy rain and spray. Always drive with due care and attention. Failure to take care may result in a crash. NOTE: The system does not prevent contact with other vehicles. It is not designed to detect parked vehicles, pedestrians, animals or other infrastructures. NOTE: The system may not alert you if a vehicle quickly passes through the detection zone. Long Range Detection The detection range is 12 meters. The sooner you get to know the back of the car, the better you can respond in a timely and safe manner. BSD Blind Spot Monitoring System When the A car is driving, the B car is seen from the rearview mirror, but the C car is not visible. If the A car changes to the left lane at this time, it is easy to collide with the C car! Distinguish Monitoring Objects Blind spot monitoring starts to work during driving. Blind spot monitoring can distinguish between fixed objects and moving objects. Fixed objects will not alarm. IMPORTANT: Can install on cars with a plastic bumper only, not work with vehicles with a metal bumper as metal bumper will interference with the radar sensor. This item fits for most DC12v sedan, compact, SUV, MPVs, pickup etc and professional audio installer installation is required. Installation instructions Overall installation and wiring diagram Review: My experience so far is that it’s not a reliable system - I’m sharing my experience so far. The system is not consistent in its detection of cars and trucks. It detects car about 80% of the time and trucks (track trailer) about 10% to 20% of the time. So far, I can’t rely on its results to make a safe lane change. ## 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. - Customer Service: If you encounter any problems during installation, please do contact us. We will provide you with the most professional customer service ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09VDMHTD7 | | Best Sellers Rank | #88 in Radar Detectors | | Brand | BY-J | | Compatible Devices | Car | | Customer Reviews | 3.1 out of 5 stars 5 Reviews | | Display Type | LED | | Frequency Bands Supported | 24GHz | | Item Dimensions L x W x H | 9.45"L x 6.7"W x 3.94"H | | Manufacturer | BY-J | | Mfr Part Number | 24GHz 053 | | Power Source | Corded Electric | | UPC | 739722614515 | | Voltage | 12 Volts | ## Product Details - **Brand:** BY-J - **Compatible Devices:** Car - **Display Type:** LED - **Frequency Bands Supported:** 24GHz - **Power Source:** Corded Electric - **Product Dimensions:** 9.45"L x 6.7"W x 3.94"H - **UPC:** 739722614515 - **Voltage:** 12 Volts ## Images ![- 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 - Image 1](https://m.media-amazon.com/images/I/618WyRJIeZL.jpg) ![- 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 - Image 2](https://m.media-amazon.com/images/I/81Qk89kHIaL.jpg) ![- 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 - Image 3](https://m.media-amazon.com/images/I/814YrT9MifL.jpg) ![- 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 - Image 4](https://m.media-amazon.com/images/I/717lUrYF0EL.jpg) ![- 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 - Image 5](https://m.media-amazon.com/images/I/71jIR+RxNfL.jpg) ## Available Options This product comes in different **Color** options. ## Customer Reviews ### ⭐⭐⭐ My experience so far is that it’s not a reliable system *by J***Y on September 17, 2024* I’m sharing my experience so far. The system is not consistent in its detection of cars and trucks. It detects car about 80% of the time and trucks (track trailer) about 10% to 20% of the time. So far, I can’t rely on its results to make a safe lane change. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.br/products/460185734-by-j-car-blind-spot-detection-system-24ghz-millimeter-wave](https://www.desertcart.com.br/products/460185734-by-j-car-blind-spot-detection-system-24ghz-millimeter-wave) --- *Product available on Desertcart Brazil* *Store origin: BR* *Last updated: 2026-06-20*