12V 2 cm Car Parking Sensor Kit With Four Sensors Universal Buzzer Reverse Backup Radar Sound Alert Indicator Probe System
This four-sensor parking sensor kit provides ultrasonic proximity detection to help you park safely by alerting you to obstacles behind your vehicle as you reverse. The compact 2 cm diameter sensors can be discreetly mounted in the rear bumper fascia or recessed areas, while the control unit handles real-time distance calculations and audible feedback.
How it works
Ultrasonic proximity detectors emit pulses and measure the return time to calculate the distance to obstacles. As you approach a hazard, the system increases the alert frequency; a continuous tone indicates a minimal predefined distance. Rear sensors activate when reverse gear is selected and deactivate when other gears are chosen.
Who is this for?
- Drivers who want an affordable, reliable backing-up aid for city driving, tight driveways, and limited reverse visibility.
- People who want to avoid scrapes on bumpers, poles, walls, or other obstacles in parking lots and garages.
- DIY enthusiasts looking to upgrade a vehicle with a simple, universal sensor system.
Real-world benefits
- Improve parking accuracy: The system detects obstacles within 30 cm to 250 cm, giving you warning in tight spaces while maintaining a safe margin in open areas.
- Clear audible feedback: Alarm distance adjustable from 30 cm to 150 cm provides consistent cues; tones escalate as you get closer, helping you gauge distance without staring at the bumper.
- Easy integration with 12V vehicles: Designed for 12V nominal systems, with a voltage range of 10.5–15 V to accommodate typical car electrical setups.
- Low power draw: Up to 200 mA current consumption keeps electrical load modest while delivering reliable operation.
- Versatile installation: 2 cm diameter sensors blend into a variety of bumper styles and recesses for a clean, unobtrusive look.
- Durable performance in varying climates: Operates between 20–65 °C and stores at 35–85 °C, suitable for a wide range of conditions.
Key specifications
- Sensor diameter: 2 cm
- Detecting distance: 30–250 cm
- Alarm distance: 30–150 cm
- Alarm sound level: greater than 80 dB at 10 cm
- Supply voltage: 10.5–15 V
- Current consumption: up to 200 mA
- Working temperature: 20–65 °C
- Storage temperature: 35–85 °C
- Number of sensors: 4
- Condition: brand new
- Rear sensor activation: rear sensors may activate when reverse gear is selected
Important considerations
Ultrasonic sensing can be affected by object shape and material. It may not detect flat objects or narrow poles and can be hindered by soft or sound-absorbing materials like wool or moss. For best results, install sensors in correct bumper position and test with typical obstacles you encounter.
