LED display parking sensor system

LED display parking sensor system with 4 sensors
Features:
·LED display
·With stand, free swiveling for the best viewing direction
·Stage-by-stage sound alarm
·Optional sensor style and color
·Human voice alarm (option)
·Anti-freezing, rainy-proof design, work well under extreme cold weather
Specifications: 
·Working voltage: DC12V 2V       
·Power Input: 5W(max) 
·Beeper: 80dB
·Working temperature: -40~+80°C
·Frequency: 40KHz
·Detection distance: 0.4-2m
·Alarm distance: 0.3-0.6m
·Best detection distance: 0.4-1.5m