This entry level Parking Sensor Kit with buzzer is budget-friendly and suitable for cars or vans with metal bumpers. Includes 4 black flat sensors and a high/low volume buzzer for audible warning. Note: Only suitable for metal bumper installation. 

State of the art advanced circuitry design and built quality
Intelligent software and microprocessor controlled
4 x Rubber sensor heads
Detectable sensor range: 0cm to 1.5m
Buzzer audible range: 40cm to 1.5m
Sensor detection field : Horizontal 120° and Vertical 60°
Advanced Self-diagnostics software with error correction
Progressive audible detection warning
Compatible with 4, 3 or 2 sensor operation
Twist lock inline connectors for each sensor 2.5M long per sensor
Operating Voltage: 12V
Standalone Hi-Low-Off buzzer
Packaging: Box with barcode sticker