Wireless Parking Sensor Name： Wireless Parking Sensor Model：SN-323-4 Product Introducation： Product Name: Wireless LED parking sensor Model Number: SN-323 ( with wireless) Specifications: 1. Wireless CPU to display communications, there are not any wire between the main board and the display. 2. Digital LED showing obstacle distance 3. Alarm by Bi-Bi-Bi sound 4. LED display with three colors (Red, yellow & green) 5. Crescent shape digital display screen 6. Turn on/off the voice according to your desire 7. All kinds of sensor colors and styles are available 8. High quality and easy to install