The package list for the 4/6/8 sensor products is shown in the following image NOTICE: you can choose different color combinations, such as: 8 sensor products, you can choose Black 2, White 2, Red 2 QXNY reversing radar can help you park easily and eliminate danger! QXNY reversing radar can help and remind you to avoid the above dangers! Product special: Features 1: The display has 2 numbers, which respectively represent the closest distance to the obstacles in front of the car and behind the car! Features 2: The display has 3 buttons, which can adjust 4 alarm sounds (buzzer/voice/mute/buzzer+voice) and the size of the alarm volume Features 3: The display cable is separated, which is easy to install Specification: 1: Rated voltage: 12V DC 2: Rated current: 100mA - 300mA 3: Ultrasonic frequency: 40KHz 4: Control module operating temperature: -30 - 80 degrees Celsius 5: Display working temperature: -20 - 70 degrees Celsius 6: Sensor diameter: 22mm 7: Installation method: drilling 8: Detection distance Behind the car: Rear 0.98ft~7.54ft , Front:0.98~2.6 ft We specialize in the production of reverse radar, so we know how to make good sensors 4 Sensors 6 Sensors 8 Sensors