KEETEC BS420 4 Sensor Parking Sensor Kit, Dual Purpose Front or Rear Use

Built for everyday driving, this vehicle parking aid uses ultrasonic detection and an audible buzzer to warn you when obstacles are nearby. It is a practical solution for cars, vans, and other 12V/24V vehicles that need dependable front rear sensors without unnecessary complexity.

The sensor cable length is 2.3 m.

If you are fitting the system in the front bumper, EXT CABLE KIT extension cables are required.

Why this parking sensor kit suits front or rear use?

The BS420 combines flexible mounting, clear warning feedback, and smart detection logic to support safer parking in a wide range of vehicles. It is especially useful for drivers who want reliable car parking sensors with strong coverage and simple operation.

• Can be installed at the front or rear of the vehicle
• Includes 4 black sensors and an audible buzzer
• Designed for vehicles with a tow bar, spare wheel, or other permanent rear obstruction
• Provides fast obstacle detection during parking and low-speed maneuvers
• Offers strong coverage with a wide horizontal scan angle
• Supports automatic sensor fault identification

Built for practical everyday parking

This parking sensor kit is made for drivers who want a cleaner parking experience in real-world conditions. Whether you are reversing into a tight driveway or edging forward in a crowded lot, the system gives an audio warning before contact becomes a problem.

Angle washers for 0°, 4°, and 10° are included to help with different bumper shapes and mounting positions. Each sensor has a core diameter of 14 mm and a mounting hole size of 18.8 mm.

Smart detection features for an ultrasonic parking sensor system

The BS420 uses ultrasonic parking sensors to detect objects with precision and deliver a clear warning signal. When an obstacle gets close, the buzzer changes to a continuous tone at around 30 cm, making it easy to react in time.

• Learning function can ignore permanent obstacles such as tow bars, spare wheels, and frames
• Sensitivity can be adjusted on the control unit with two levels
• Buzzer volume can be set in three levels directly on the unit
• Waterproof sensor connectors make replacement easier if needed
• Additional ACC wire allows optional stable power connection

Installation notes for better results

The sensors are supplied with short cables and waterproof connectors for a tidy installation. The control unit itself is not waterproof, so it should be mounted in a dry location. For front bumper installations, the recommended extension cabling helps ensure a proper fit and reliable operation.

Technical specifications for reliable vehicle parking aid performance

These specifications show why the BS420 is a dependable choice for drivers looking for a durable vehicle parking aid with broad compatibility.

• Operating voltage: 9~27V DC
• Working current: < 250mA
• Speaker output: 80 ± 10dB
• Rear detection range: 0.3 ~ 2.59 m
• Front detection range: 0.3 ~ 0.99 m

Operating temperature range

• ECU: -40°C ~ +80°C
• Display: -20°C ~ +70°C
• Sensor: -40°C ~ +80°C

FAQ about front rear sensors

Order the KEETEC BS420 today

If you want a dependable parking sensor kit that supports both front and rear mounting, the KEETEC BS420 is a strong fit. Add it to your vehicle for clearer parking guidance, better awareness, and a more confident driving experience.

Need help choosing the right setup? Contact Lockdown Security for expert advice and installation support.